Olefine ketone
[化] 烯酮
🧩 词语组成解析
[化] 烯烃; 链烯烃
ketone
['ki:toʊn]
n. 酮;
🗣️ 情景例句
He's writing to invite me
他写信邀请我
Mr. Chairman, may I have the floor?
主席，我可以发言吗？
Many people have been out of work recently.
最近有许多人失业。