Saprobic
污水生物的
🗣️ 情景例句
Good. Do you have any back or knee problems?
好。你的背部和膝关节有什么毛病吗
I'm sorry. I'm engaged now.
对不起，我现在正忙着。
The railway station was big, black and dark.
火车站很大，又黑又暗。