Underdrainage
n. 暗渠排水, 地下排水
🗣️ 情景例句
OK.
好。
Only certain people are permitted to enter that club.
只有特定的人才被允许进入该俱乐部。
No, that would be fine. I'll tell you how to get here.
不晚，就这么定了。我告诉你到这儿来怎么走。