Macrolide
n. [生化]大环内酯物
🗣️ 情景例句
There is an emergency. Please send a fire engine.
这有火灾，请尽快派消防车来。
Is there any discount for the USA Railpass?
火车通行证有折扣吗？
I'm very sorry, but I can't come.
但很抱歉，我不能来。