1、exchange
交换;互换
We exchanged addresses and Christmas cards.
我们交换了地址和圣诞贺卡。
The two men exchanged glances.
那两个男人互相扫了一眼。
交战;交火
There was an exchange of fire during which the gunman was wounded.
有过交火,其间那名持枪歹徒受伤了。
This could intensify the risk of a nuclear exchange.
这可能会加剧爆发核战争的危险。
(不同国家人们之间的)交流,互访
a series of sporting and cultural exchanges with Seoul.
和首尔之间的一系列体育和文化交流
educational exchanges for young people.
面向年轻人的教育交流
2、discussion
讨论;商讨
There was a lot of discussion about the wording of the report.
关于此则报道的措辞议论纷纷。
Council members are due to have informal discussions later on today.
委员会成员定于今日晚些时候进行非正式讨论。
论述;详述
For a discussion of biology and sexual politics, see chapter 4.
生态政治和性别政治论述请见第4章。