N-butanal
[化] 正丁醛
?? 詞語(yǔ)組成解析
正丁醛
??? 情景例句
We are in the red.
我們有虧損。
You had better not bother him right now.
你現(xiàn)在最好不要去打擾他。
5 What makes you feel that you are doing well?
5。是什么使你感到自己干得不錯(cuò)？