Hydrocoel
水系腔
🗣️ 情景例句
Today is the twelfth. Why?
今天是十二号。怎么？
Nothing comes out of the sack but what was in it.
无风不起浪。
Yes, it is. Why don't you take off your sweater?
是啊，你何不脱了羊毛衫呢？