Biformyl
[化] 乙二醛
🗣️ 情景例句
It's raining cats and dogs outside.
外面下着倾盆大雨。
Sweep before your own door.
先律己，后律人。
For most of them, fifty pence is a small price to pay for a nice big bar of chocolate.
对大部分孩子来说，用50便士来买一大块好的巧克力，是算不了什么的。