Ketopyrrolidine
吡咯烷酮, α, γ-丁内酰胺
🗣️ 情景例句
And there's a phone call for you, Mr. Bennett. Bennett
先生， 有你的电话。
I was 10 minutes late.
我迟到了五分钟。
The train was traveling at 120 miles an hour.
火车时速一百二十英里。