Pentaethylated
五乙基化的
🗣️ 情景例句
parents are invited to attend--
家长被邀请来参加
Now, I'd be happy to answer your questions.
现在，我乐意答复你们的问题。
That may be true, but you sold me a blouse that I can't use any more.
也许真是这样，但这是你卖给我的，现在不能穿了啊。