Undercourse
底层, 垫层, 在花砖或瓷砖之下的底层
🗣️ 情景例句
So far, you're all tied.
到现在为止 你们不分胜负。
I can see you have put a lot of time into it.
我相信你在制定这个计划上一定花了不少精力吧。
With all these mouths to feed, he didn't know what to do.
由于有那么多人要供养，他不知道怎么办才好。