Ferrojacobsite
铁锰尖晶石
🗣️ 情景例句
Haven't I seen you before?
我以前没见过你吗？
So I will receive and sign it overnight.
那么，我明天就可以收到并且签上名了。
The demand for our products has kept rising.
要求定购我们产品的人越来越多。