How can there be a sound of pulling a coffin when there is no one in the middle of the night, and ho

Under normal circumstances, there will be a sound in the middle of the night when there is no one, which is very normal, because the weather is very hot now, and the steel structure will be deformed, and when it is cold, it will shrink and then obstruct at night, and there will be a sound in the process, which is not strange, don't be too superstitious.

When the conference room is empty in the middle of the night, there is a sound of zippers, which may be due to the fact that someone has accidentally returned to look for something.

It is normal for no one to make a sound drop in the middle of the night in the conference room. There may be rats in there, and the rat's movements may have affected that thing. Possibly, it is.

He has a slight shaking, you can't notice it, but when he moves to a certain extent, it loses stability and falls off on its own.

There will be a noise in the middle of the night when no one is in the conference room, it may be the sound of the wind outside, don't make a fuss, don't believe in the existence of ghosts, it's all to scare yourself.

I think this should be the explanation, which should be that the meeting will make the world uncomfortable, and there are not many people speaking, so there is no sound.

It would be someone pulling off some stick in the middle of the night when no one was around, it should be the sound of the wind blowing, or some other animal.

How can there be an appreciation of pulling the table when there is no one in the conference room in the middle of the night, and how to explain it? That means someone in your company is working overtime until midnight. Otherwise, how could there be a sound of the table being pulled?

Check the walls for noise inside the meeting room, if not human sounds, you need to go from these aspects.

You can check it out for yourself and you'll know what's making the noise.

It may be because the ceiling is reinforced concrete, which expands and contracts coldly.

Let's see if it's blown by the wind? Usually the sound we hear is the wind blowing, or it is made by small animals.

Hello, there is a noise of zippers in the meeting room, it could be the sound of tables and chairs colliding, or the sound of other animals such as rats.

This is something else, such as the sound of the floor slab amplified when the cement block falls.

In the conference room, when no one is there in the middle of the night, there is a sound, which should be caused by the window or glass.

1. Traditional linguistics.

a) Ancient Greek linguistics.

b) Ancient Roman linguistics.

2. Historical and Comparative Linguistics.

1) The formation of historical comparative linguistics.

2) The development of historical comparative linguistics.

3) The School of Youth Grammar.

3. Modern Linguistics.

a) Saussure and structuralist linguistics.

4. Contemporary Linguistics.

a) Chomsky and Transformational Generative Linguistics.

First, the research methods are different.

Synchronic linguistics: Synchronic linguistics is the static observation and study of language systems from a certain historical period.

Diachronic linguistics: Diachronic linguistics is the study of the development of a language from one era to another from the perspective of longitudinal development.

Second, the content of the research is different.

Synchronic linguistics: Synchronic linguistics is the solution to or understanding the similarities and differences between two languages.

Diachronic linguistics: Diachronic linguistics is the study of the changes that languages undergo over a certain period of time.

Third, the use of different methods.

Synchronic linguistics: Synchronic linguistics uses a crossover approach to distinguish whether two languages or sounds are the same, or whether two words in the same language are identical.

Diachronic linguistics: Diachronic linguistics is the study of problems using the orthopedic and retrospective approaches. The face-to-face approach is a chronological narrative of a language's history based on documentary research, while the retrospective approach is a reconstruction of a language through comparison.

Synchronic linguistics: the static observation and study of language systems from a certain historical period, also known as dynastic linguistics. Synchronic linguistics, also known as static linguistics, is a linguistic science founded by Saussure to distinguish between two languages or whether the phonetics are the same, or whether two words in the same language are identical.

The characteristic of this discipline is that it insists on independent analysis in the two languages at the same stage in order to solve or understand the similarities and differences between the two languages.

Diachronic linguistics: Diachronic linguistics is a branch of language research, which is the branch of linguistics that studies the development and change of a language from one era to another from the perspective of longitudinal development. Diachronic linguistics, also known as evolutionary linguistics or historical linguistics, is a linguistic classification created by Saussure, which refers to the study of the historical evolution of a language carried out by most linguists before the emergence of modern linguistics, mainly studying the various changes that a language has undergone in a certain time span. The problem is studied using the orthopedic approach (a chronological narrative of the history of a language based on documentary evidence) and the retrospective approach (reconstructing a language through comparison).