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've been moonlighting for years.
我几年来一直兼职。
Do you usually do arithmetic on Sunday?
你通常在星期日做算术吗？
It happens every night. The noise wakes me up. Would you please not do this?
每晚都这样。这声音总吵醒我！请你别这样，好吗？