Diarylamine
[机] 二芳香基氨
🗣️ 情景例句
Three scoops?
三杓？
I ought to not bother him any more.
我应该不要打扰他了。
Many firms, for instance, have great difficulty in obtaining technical or scientific books from libraries
比如，很多公司向图书馆借阅科技书籍时感到很困难，