Aikylide
[医] 烃基化物
🗣️ 情景例句
How many days will it take for my mail to reach its destination?
我的信件到达目的地要用几天？
If it's not too much trouble, I would like some help.
如果你不嫌麻烦的话，我想请你帮个忙。
He prepared the speech carefully and went to the wedding with Jenny.
他认真准备了讲稿，带着珍妮一道去参加了婚礼。