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d。The air example becomes lighter when heated.

The eyes are the windows to the soul. It is very important to have a pair of bright, clear eyes, so we should protect our eyes in our lives. Develop good reading habits.

Lying or walking without reading. Relax after every hour of reading. Keep your distance from the TV set when you watch TV and let your eyes rest every 30 minutes.

Don't stare (stare) at the sun or try to read in the dark. Even if you wear sunglasses, never look directly in the sun can easily hurt your eyes. Check your eyes often.

Not many people have this habit, but it is necessary. If you feel that there is a problem with your eyes, have them checked quickly for eye problems that can be detected early and**, checked regularly. As long as you can rest your eyes.

You can close your eyes for a few seconds or a distance of one or two minutes. A small break to relax your eyes will help stop you from getting eye problems. Be careful when you choose your glasses.

Glasses that don't fit you can bring you trouble. Make sure your glasses fit you. If they don't feel right, your glasses change.

The next weekend, I saw a 14-inch color TV at another yard thrift sale, which was as cheap as giving it away. I felt that I couldn't afford to miss the opportunity, so I bought it. Now that I have two TVs, I can't wait to watch the show I want to watch next weekend.

Spring is over, and most of the electronic devices I once dreamed of buying home are gone.

Then I had a new idea. I've heard of a man who comes home every few months in a truck full of boxes of old and new things that people give to their relatives. So I told my father that I would do everything I could to send something home so he could reopen his resale business.

Every few months, I collect a few boxes of American "trash" such as televisions, toasters, fans, hair dryers, etc., and send them home. My father's "junk" market became famous, and people came here to buy things.

Three years later, when I came home for the first time after leaving home, I found that my neighbors had such a piece of "garbage" in their living room. As it turns out, I have an obligation to help people back home keep up with the latest technology that you no longer need.

The following weekend, at another courtyard sale, I saw a 14-inch TV selling for almost nothing. I felt I couldn't miss the offer and bought it. Now I have two sets and can't wait to see what else I can afford next weekend.

Spring is over, and by that time I have accumulated almost all types of electronic devices that I have always wanted to have home.

Then this new idea came to mind. I had heard of a man going home on a trip, every few months after he drove a truck full of boxes and using new things, people were sent to relatives so I told my father that I would be sending many types of items as I could so that he could start his resale business.

Every few months I will collect a few boxes of American "junk" TVs, toasters, fans, hair dtyers, and so on. And send them home. As the word there is about my father's "junk" market, people are coming to buy these things.

Three years later, when I left home for the first time since visiting my family, I learned that many families in our community already had a piece of "trash" in their living room. It proves that it is my responsibility to get people home to get the latest technology that is no longer needed.

The following weekend, I saw a 14-inch color TV at another yard thrift sale, which was cheap as if it were given away for free. I thought I couldn't miss this cheap deal and bought it. Now I have two TVs.

I can't wait to see what else I can find next weekend.

By the end of spring and the beginning of summer, I had collected almost all types of appliances and was looking forward to going home.

Then I had a new idea. I've heard of a guy who goes home every few months. He drove a big truck full of boxes, new and old, that people were going to send to their relatives.

Then I told my father that I was going to send as many types of things as I could home, so that he could do a resale business.

Every few months, I would sort out boxes full of American "waste," including televisions, toasters, fans, hair dryers, and so on, and send them all home. I heard that my father was in the "waste" business, so everyone went to see and buy things.

Three years later, when I returned home for the first time since leaving home, I noticed that many of our neighbors had a piece of "waste" in their living rooms. This situation shows that it is my duty to bring everyone home to learn about the latest technology, which, of course, you already know.

The last sentence is so awkward in English).

Throughout history, wars have been fought for aggression and plunder. On the banks of the Rhine still stand the towers of some medieval feudal lords. At that time, the feudal lords inhabited castles, and whenever they wanted to expand their territory, consolidate their power, and increase their prestige and wealth, they would provoke one war after another.

But they don't fight like the modern feudal lords, the Wall Street tycoons. The barons of the Middle Ages, the equivalent of the predecessors of the modern capitalists, were only responsible for declaring war, and the wars that followed were borne by their unfortunate slaves. Poor and ignorant slaves were admonished to submit to their masters, believing that it was the duty of each and every one of them to be loyal to pierce the throat of the enemy in one war after another for the good and glory of his master.

These owners see them as ants. In short, this is called war. The upper classes declare war and the lower classes go to war; The upper class has reaped all the benefits and has not been harmed, while the lower class has no gain and has lost their lives.

[That's what it means]:

Their attempts to match their oft-simplified, empirical classification model with the complex realities of the North American population have been met with apparent difficulties, even though they have not hesitated to classify American "" as "people of color." They let their classification models dictate their analysis of this data. ”

Recommended Answer'Wrong Interpretation】 The implication of the original author's message is not that "black people are not clearly categorized", but that they should not be used'The word "negroes" should not be divided into "races". "Still firmly" means to say:

Population classification by race is the tradition of population division in the past, and they still adhere to this tradition, and they don't even stumble. At the same time, it is also said that due to the "complex reality of the population of North America", it is not easy to construct a proper "population classification model".

While black Americans remain firmly categorized as people of color, they are clearly struggling to frame their simple and empirical categorical structure in the complex realities of North American populations.

They acquiesce to their own category architecture to control their analysis of data.

It probably means that when they did the research, they did not clearly classify black people well, and the results were not scientific and objective due to the flaws in the architectural design.

Although black Americans are strictly classified as people of color in terms of class, they clearly face difficulties in defining a model for the simple and empirical classification of the population in North America.

They let their classification patterns dictate the analysis of their data.

Happy with you!

They (presumably researchers) are clearly facing difficulties in the question of how to divide the de facto complex North American population into a simple positivist grading scheme, even though the American "black" (a slur name) is still inexorably divided into social hierarchies. They make it possible for their grading scheme to be used to analyze the data.

Hand translation, scoring, by the way, these two sentences are not very logical, I can't understand the connection, I hope you can take a look at it according to the context.

While American "blacks" still have specific "racial color markers" in terms of "hierarchy", it is clearly difficult to face the complex reality of the North American population, trying to build a framework based on the simplistic and empirical categories that exist by confronting them, allowing for data analysis in their own unique category patterns.

They have undergone simple and substantial adjustments to the classification structure of the complex North American population, even though black Americans are still assigned to the colored race column and analyze data on this classification structure.

Monitoring security purposes. Because a tracking system should be able to:

Track multiple targets and retrieve the correct identity for each target.

In different cases, most tracking algorithms make use of two main ones.

component, the visual characteristics of the object and the spatiotemporal **.

Over the past few decades, many trackingmethods have been proposed to solve tracking problems based on particles.

Filter. These methods basically perform a probabilistic propagation process.

Posterior estimates using a random motion model.

There is no strictly linear Gaussian hypothetical distribution to relate to.

Transition and likelihood models. Color and segment clues or pixels wise.

The Emergence-State model is applied to the particle filter. Markov chain Monti.

The Carlo (sampling) method is used to reduce the cost of the computa pair.

Tracking in multi-objective high-dimensional state space-ing. Mutated.

Sample-based particle filter algorithms have been proposed to solve specific problems.

Such as multiple interacting targets, sudden movements, sequences with small.

Object tracking and multiple motion models.

For security monitoring. The self-tracking system should be able to:

Multi-target tracking and retrieval of the correct identity of each target.

In different cases, most tracking algorithms make use of it twice.

components, visual characteristics of objects, and space-time**.

Over the past few decades, many trackingmethods have been proposed to solve tracking problems, based on particles.

Filter. These methods basically perform a probabilistic propagation process.

Posterior estimates using a random motion model.

Assumptions of an unbounded linear Gaussian distribution.

Transformation and likelihood models. Color and segmentation information or pixel wise.

The Occurrence Performance model is applied to the particle filter. Markov Chain Monte Carlo.

The Monte Carlo (MCMC) method is used to reduce the cost of computation.

ING of multi-target tracking in high-dimensional state space. variants.

The MCMC method based on particle filter has been proposed to solve specific problems.

Such as multiple interactive targets, sudden movement sequences, small.

Target tracking, multi-motion model.