N-phenylmorpholine
[建] N-苯基吗
🗣️ 情景例句
I can see that you've done this before.
我发觉你曾干过此事。
Cindy's sister is coming to stay with her a week from tomorrow.
辛迪的妹妹从明天起一个星期以后将过来和她住在一起。
How long has Kate been at her school?
凯特进校学习有多长时间了？