Dichlorethylene
二氯乙烯
🗣️ 情景例句
We tested it last week on twelve- to fifteen-year-olds,
我们上一周曾在十二岁至十五岁的孩子中试过这项游戏，
I asked him to pay, but he wouldn't.
我请他付账，但是他不肯。
What's Jim doing?
吉姆在干什么？