Undersluice
底部(闸门)泄水渠槽
🗣️ 情景例句
Stopping by Woods on a Snowy Evening
雪夜林边小驻足
Besides the required courses, I'm taking an elective in the Lab Science.
除必修科目外，选修科目我选了实验科学。
My particular experience is largely in oil,
我是专门搞石油的，