Polyketone
聚酮
🗣️ 情景例句
She is dying to know where you've been.
她极想知道你到哪去了。
I subscribed to a lot of periodicals last year.
去年我订了许多期刊。
Never mind. So now you know what you should do.
不要紧。好了，现在你知道该怎么做了吧。