at

1.在（某处）used to say where sth/sb is or where sth happens

2.在（表示学习或工作地点）used to say where sb works or studies

3.在（某时间或时刻）used to say when sth happens

4.在…岁时used to state the age at which sb does sth

5.向；朝in the direction of or towards sb/sth

6.（用于动词后，涉及未做成或未做完的事）used after a verb to show that sb tries to do sth, or partly does sth, but does not succeed or complete it

7.在…远；从相隔…远的地方used to state the distance away from sth

8.处于…状态used to show the situation sb/sth is in, what sb is doing or what is happening

9.（用于速度、比率等）以，达used to show a rate, speed, etc.

10.~ sb's/sth's best/worst, etc.处于最佳（或最差等）状态；在全盛（或谷底等）时期used to say that sb/sth is as good, bad, etc. as they can be

11.（与形容词连用，表示能力）在…方面used with adjectives to show how well sb does sth

12.（与形容词连用）因为，由于，对…used with adjectives to show the cause of sth

13.应…（而）；响应；回答in response to sth

14.（提供电话号码时用）used when giving a telephone number

1.在,于,到;经由

2.向,对

3.应,照,见...而,闻...而;一...(就)

4.在...

5.从事

6.从...

7.动作的一次

8.在...方面

9.处于...中

10.以,用,有

1.【化】(=astatine)

2.(=Air Transport(ation))

3.【电】(=ampere turn)

4.(=antitank)

5.(=Atlantic Time)

6.(=alternative technology)替代技术

7.(=appropriate technology)适用技术

1.in a particular place; used for saying where you stop on a trip; sitting or standing close to something, especially in order to do something; in a particular part of a process, activity, program, or book

2.used for saying that someone is doing something or taking part in an activity somewhere; used for stating what state or situation someone or something is in

3.used for stating the exact time when something happens; used for saying when a particular situation exists; during a particular period; when someone is a particular age

4.used for stating what makes someone react in a particular way

5.used for showing the level of prices, temperatures, speeds, etc.

6.used for stating the direction in which you look, point, or aim something

7.used for stating what someone is trying to catch, hold, or hit

8.used for showing that you repeat an action many times with small movements but without doing it completely

9.used for stating the activity or subject that someone is skillful or not skillful in

10.used for stating the phone number where someone can be reached. The British word is on

1.[Chemistry](=astatine)

2.(=Air Transport(ation))

3.[Electricity](=ampere turn)

4.(=antitank)

5.(=Atlantic Time)

6.(=alternative technology)

7.(=appropriate technology)

1.Atlantic Time