Polymetallic
多金属的
🗣️ 情景例句
I'd like that, but ...
我很想去， 但是……
Suppose you couldn't go on the trip.How would you feel?
假定你不能继续你的旅行，你将感觉如何？
Do we have to wear the helmets?
我们得戴上防护帽吗？