Vignite
磁性铁矿
🗣️ 情景例句
It's tough getting an O.K. from the boss.
很难从老板那听到声“同意”。
I'm innocent.
我是清白的。
When we talk about the universe, we mean the earth, the sun, the moon and the stars, and the space between them.
人们谈论宇宙时，是指地球、太阳、月亮、星星以及它们存在的空间。