Underdrainage
n. 暗渠排水, 地下排水
🗣️ 情景例句
There are lots of places to go,
有很多地方要去，
Better some of a pudding than none of a pie.
聊胜于无。
Sorry, but could you kindly repeat what you just said?
抱歉，你可以重复刚刚所说的吗？