Biofiltration
生物过滤(作用)
🗣️ 情景例句
I do, too.
我也一样。
I had a hamburger and a fried chicken leg?
我吃一个汉堡包，一个炸鸡腿。
I can't remember.The man who I served was wearing a hat.
我记不起来了。我接待的那个人戴着一顶帽子。