Biofiltration
生物过滤(作用)
🗣️ 情景例句
Who's buying the drinks?
谁来买酒？
That's fine. What time do I have to be at the airport?
好的。我应该几时到达机场？
It is hard for energetic, quick-minded people to waste time,
他们常常受到责备，精力充沛、头脑敏捷的人极不愿意浪费时间，