-
Candles, spring silkworms.
Candles, a tool for daily lighting, are mainly made of paraffin wax, and in ancient times, were usually made from animal fat. Combustible glows. In addition, candles are very versatile:
It is also used in birthday banquets, religious festivals, collective mourning, ceremonies and other activities. In literary and artistic works, candles have symbolic meanings of sacrifice and dedication.
The spring silkworm is a living organism that is a silkworm that is raised in the spring. Spring silkworms are used in poetry and literature to describe teachers and other people who are willing to give, while Chinese mainland and Hong Kong have made films and television films under the name of spring silkworms, and songs named after spring silkworms have been produced in several countries. Raising silkworms requires disinfection and feeding, and finally produces cocoons.
The candle principle. The candle burning we see is not the burning of the paraffin solid, but the ignition device ignites the cotton wick, and the heat released melts the paraffin solid, and then vaporizes to generate paraffin vapor, which is combustible.
When the candle is lit, the flame that initially burns is smaller and gradually larger, and the flame is divided into three layers (outer flame, inner flame, and flame center). The flame core is mainly candle vapor, and the temperature is the lowest; The internal flame paraffin burns insufficiently, the temperature is higher than that of the flame core, and it contains carbon particles; The outer flame is in full contact with the air, the flame is the brightest, the combustion is sufficient, and the temperature is the highest. Therefore, when a matchstick is quickly placed flat into the flame and taken out after about 1 second, the part of the matchstick that touches the outer flame turns black first.
At the moment when the candle is blown out, a wisp of white smoke can be seen, and the white smoke can be lit with a burning match, which can rekindle the candle, so it can be proved that the white smoke is a solid tiny particle produced by paraffin vapor when it meets condensation.
-
The teacher --- the spring silkworms to the end of the dead silkworms, and the wax torch turned into ashes and tears began to dry.
The sanitation workers --- dirty one of me, clean 100,000.
The traffic police --- whether it is under the scorching sun, in the wind, in the lightning and thunder, and in the heavy rain, the baton of traffic is always playing the main theme of smooth flow.
-
Spring silkworms, candles, street lamps, bees, falling flowers.
Because "the spring silkworm is dead to the end, and the wax torch turns to ash and tears begin to dry", so the spring silkworm and the candle have the spirit of selfless dedication.
And the bees work hard to provide sweet honey to everyone, so it is also selfless dedication.
The street lamp jujube shines brightly, illuminating others, and the falling rock eggplant flower finch is "turned into spring mud to protect the flowers", so it is also selfless dedication.
-
1. Candles: burn yourself and illuminate others;
2. Chalk: sacrifice oneself to spread knowledge;
3. Tree roots: bury deep in the ground, and strive to absorb the points of Bi Sheng's Xun, just for the lush branches and leaves, and support a shade for the old people;
4. Stream: Ding Dong day and night, adding a leisure to people's lives;
5. Xiaocao: unremitting vigor adds a piece of freshness to people's homes.
-
Roots and trees: Roots carry nutrients to trees, but they are buried in the ground in obscurity. Trees absorb nutrients and flourish in foliage, attracting attention.
Cleaners clean the road before people go to work, creating a clean environment that goes unnoticed.
-
Of course, the selfless dedication must be the candle, and the wax torch turns to ashes and tears begin to dry.
-
1.The spring silkworm is dead to the end, and the wax torch turns to ash and tears begin to dry.
2.Bee Luo Yin.
Regardless of the flat land or the top of the mountain, the infinite scenery is occupied.
After picking a hundred flowers into honey, for whom is it hard and for whom is it sweet?
3.Falling red is not a ruthless thing, turning into spring mud is more protective of flowers.
4.Heng Mei coldly pointed at Qianfu, bowing his head and being willing to be a son of a cow.
5.Dive into the night with the wind, moisturizing things silently.
6.Don't let people praise the color, only leave the air full of goodness.
Do your best, and then die. (Zhuge Liang).
The roots of the tree buried in the ground cause the branches to produce fruit, but they do not ask for anything in return. (Rabindranath Tagore) is lying in a lonely village and does not mourn himself, and Shang Si is the national military wheel. (Lu You's "November 4th Wind and Rain Masterpiece") came with a heart and didn't bring half a grass. (Tao Xingzhi).
If you want to eliminate the evils for the Shengming, you are willing to decay and cherish the old age. (Han Yu's "Left Move to Languan to Show Nephew Sun Xiang") My only hope is to make more contributions. (Bethune).
-
Dayu is one of the most revered historical figures of the Chinese people. Dayu's selfless dedication to water control "three times through the door without entering" is infinitely admired by the world.
Nuwa is a historical figure with a strong mythological color, she refines stones to make up the sky, kneades soil to create man, and pioneers the marriage system, is the great founder of ancient human beings and ancient civilizations in the Oriental world, and is the only great female ancestor in the history of the Chinese nation. Under the extremely difficult conditions of ancient times, in the face of great disasters, she stood up and made selfless dedication to benefit mankind, benefiting all things, and advancing civilization, and was the great founding ancestor of the historical world. Her actions and career are a source of strength that inspires and inspires generations of Chinese sons and daughters to always strive for progress.
For the development of her hometown, Huang Daopo is selfless and self-improving.
-
Parents are, of course, the first, followed by teachers, sanitation workers, gardeners, police, especially traffic police, etc., all of whom are working hard for others.
The story of Marie Curie's selfless dedication to radium.
It is impossible for a person to be completely selfless, and he will keep his bottom line no matter what. However, people who are overly committed can also cause trouble in their own interactions. If the other person is a good person, then the person who is too dedicated may put pressure on the other person and create a sense of distance; If the other person is a selfish person, then what the giving person gives may become worthless in the eyes of the other person. >>>More
Spring silkworm Tang Dynasty great poet Li Shangyin's poem "Spring silkworm to the end of the dead silk, wax torch into ashes and tears began to dry", he showed the perseverance, loyalty, and dedication of the spring silkworm to the extreme, and became a good sentence sung through the ages. People vividly compare teachers to "spring silkworms", which is a high evaluation of teachers' selfless dedication and noble qualities. People praise teachers for being like spring silkworms, "spit out all the threads in their hearts, dedicate their lives to infinite love, obscurity and nothing to do, and weave splendid and warm the world". >>>More
Zhan Tianyou is a pioneer of modern science and a famous engineer, full of patriotic enthusiasm in the face of the difficult situation of having no capital, no technology, and no talent in China, and was ordered to build the Beijing-Zhangjiakou Railway. With the spirit of selflessness and hardship, he traveled all over the mountains and mountains between Beijing and Zhangjiakou, and it took only 5 million yuan and 4 years to build the Beijing-Zhangjiakou Railway, which was planned for foreigners to cost 9 million yuan and took 7 years to complete. >>>More
Although cicadas are not pests, their dedication to nature and human beings can be said to be equal to pollution. >>>More