Underdrainage
n. 暗渠排水, 地下排水
🗣️ 情景例句
They're both students of the performing arts.
他们两个都是的搞表演艺术的学生。
Sorry, can I see her before Friday?
对不起，我能周五之前见她吗？
Yes, I think I have. Look at that book on the desk. Maybe it's yours.
是的，我想我看见了。请看桌子上的那本书。也许就是你的。