Ramirite
铜钒铅锌矿
🗣️ 情景例句
Tell me about your educational background.
告诉我你的学习背景。
Well, I'm sorry you have to leave so early.
哦，很遗憾，你非得这么早走不可。
THE UNIVERSE AND MAN-MADE SATELLITES
宇宙与人造卫星