exchange

中文： 交换、调换、兑换、外汇

1. An act of exchanging or trading. (countable, uncountable) · All in all, it was an even exchange.· an exchange of cattle for grain
2. A place for conducting trading. (countable, uncountable) · The stock exchange is open for trading.· The old corn exchange has been converted into a music venue.
3. A central office. (countable, uncountable)
4. The portion of a telephone number that represents (or formerly represented) a central office. (countable, uncountable) · The 555 exchange is reserved for use by the phone company, which is why it's often used in films.· NPA-NXX-1234 is standard format, where NPA is the area code and NXX is the exchange.
5. A conversation. (countable, uncountable) · After a lengthy exchange with the manager, we were no wiser.
6. The loss of one piece and associated capture of another. (countable, uncountable)
7. The loss of a minor piece (typically a bishop or knight) and associated capture of the more advantageous rook. (countable, uncountable)
8. The transfer of substances or elements like gas, amino-acids, ions etc. sometimes through a surface like a membrane. (countable, uncountable)

复数 exchanges