Wellpoint
降低地下水位的井点
🗣️ 情景例句
I've been busy all day.
我今天一整天都非常忙。
Mr. Jones spent his undergraduate days at Columbia.
琼斯先生在哥伦比亚大学渡过了他的大学时代。
No littering on the campus.
在校园内不准乱丢废物。