Undersluice
底部(闸门)泄水渠槽
🗣️ 情景例句
Oh, Grandpa, I'm so happy to see you!
啊， 爷爷！ 见到您我真高兴。
Why was only he exempted from work?
为什么只有他不必工作呢？
I'm very sorry, comrade, said the man. I won't do it again.
“很对不起，同志，”楼上人说，“我不会再这么做了。”