Maleoyl
马来酰基，顺丁烯二酰基
🗣️ 情景例句
Sorry, I couldn't help overhearing, did you mention something about...
对不起，我无意中听到你们的谈话，你们是不是提到...
I understand completely.
我完全明白。
I can't decide!
我拿不准！