Pentaethylated
五乙基化的
🗣️ 情景例句
I don't see why you are kicking up such a fuss.
我不明白你为什么要这样小题大作。
Which one is more expensive?
哪一个是比较贵的？
We'd better take it up with them, in that case.
如果是那样，我们最好向他们提出来。