Piperidione
[化] 二乙哌啶二酮
🗣️ 情景例句
It's been a pleasure to talk to you.
和你谈话是件很愉快的事。
Would you care to answer my question on the warranty?
你可以回答我有关保证的问题吗？
So he couldn't buy himself lots of good things. But he had lots of friends instead.
所以他不能给自己买很多好东西。可是他却有许多朋友。