Biodegradation
生物降解
🗣️ 情景例句
Do you have any evidence?
你有什么证据？
I'm Edwin. I'll show you to your hotel.
我是爱德温，我带你去旅馆。
That's the doorbell, said Ann's mother. They're here!
“门铃响了，”安的母亲说。“他们来啦！”