Underdrain
n. 阴沟, 地下沟道, 盲沟, 暗渠
🗣️ 情景例句
Well, for one thing, he's my sister's boyfriend. Ann talks about Jack all the time.
首先，他是我妹妹的男朋友。安整天就是杰克长杰克短的。
I am not through with school yet.
我还没有毕业。
She bumped into the furniture and kept mumbling about the guests.
她撞到了家具上，嘴里还不断咕咕哝哝议论客人。