Filtration underground
[医] 地下过滤
🧩 词语组成解析
n. 过滤\\n[化] 过滤
🗣️ 情景例句
I thought so, too.
我也这样想。
Never swap (or swop) horses while crossing the stream.
骑渡中流莫换马。（指危难时不宜做大变动）
The bison skins were sent by rail to cities to be sold.
野牛皮用火车运到城里出售。