Undercourse
底层, 垫层, 在花砖或瓷砖之下的底层
🗣️ 情景例句
He has no command over himself.
他不能克制自己。
Many a flower is born to blush unseen.
有许多花儿生来就开著没有人欣赏。
Do you know where it is?
你知道地方吗？