Tetranitrocompound
四硝基化合物
🗣️ 情景例句
I don't know how to thank you, Susan.
我不知道如何谢你， Susan。
There is a crook(=affliction,trial) in the lot of every one.
人生总有倒楣事；人生总有不如意处。
until bit by bit the walls of the ego recede,
直到自我的围墙一点一点地倒塌下来，