Dioxopiperidine
二氧代哌啶, 哌啶二酮
🗣️ 情景例句
I called my parents from the airport.
我从机场打电话给我父母。
Say not all that you know, believe not all that you hear.
莫道全所知，莫信全所闻。
There was a good talk about the increase in the world's population.
有个关于世界人口增长的谈话，很不错。