Undercourse
底层, 垫层, 在花砖或瓷砖之下的底层
🗣️ 情景例句
A watch! I've got just the place for watches! Let's go.
手表！我正好知道有家卖表的。走吧！
The truest politeness comes from sincerity.
真正的殷勤出于真诚。
I think I'll throw away these newspapers.
我想我要扔了这些报纸。