Allylamine
丙烯胺
🗣️ 情景例句
But personally I believe a business letter should end with Very truly yours, not Sincerely.
还行，乔治。但是我个人相信一封商业信函应该以“敬上”结尾，而不是“谨启”。
If I get my work finished in time,I'll leave for New York Monday.
如果我把工作及时完成了，我将星期一去纽约。
We're going to spend three days in the country.We're going to stay at my mother's for the weekend.
我们打算到乡下去三三，在我母亲家度周末。