Cascade aerator
[化] 阶式曝气装置
🧩 词语组成解析
[化] 曝气器; 曝气装置\\n[医] 曝气池; 充气器, 灌气器
🗣️ 情景例句
That was fast.
而且又快。
How much is this meat per pound?
每磅肉要多少钱？
Yes, it's here, in my bag. What about yours?
有，在这儿，在我的提包里。你的票呢？