Undercourse
底层, 垫层, 在花砖或瓷砖之下的底层
🗣️ 情景例句
If anyone has any objections, now is the time to voice them.
如果有人反对，现在就可以说出来。
I was born in China and brought up in the U.S.A.
我出生在中国，在美国长大。
We'll have to get this contract typed as soon as possible.
我们得尽快把契约书打出来。