Chelen
[医] 氯乙烷
🗣️ 情景例句
We can write letters. It's cheaper than calling.
我们可以写信就好，那比打电话便宜。
You have to study English, don't you?
你必须学英语，不是吗？
When the bees came back to the hive, Von Frisch saw a curious sight.
当蜜蜂返回蜂箱时，冯·弗里施看到一个奇特的现象。