Cyanobenzene
苯甲腈
🗣️ 情景例句
first we need to know some references.
首先我们得知道你们有哪些备询人。
When I had a rest, what were you doing?
当我休息时，你在做什么？
Hay had been cut and cowsheds had been cleaned.
干草已切好，牛棚也打扫干净了。