Fervanite
水钒铁矿
🗣️ 情景例句
I'm afraid I stayed too long.
恐怕我呆得太久了。
If it hadn't been for your help, we would never have finished it.
如果没有你的帮助，我们永远完不成任务。
The real dividing line between continents and oceans occurs at the foot of a steeper slope.
大陆和海洋的真正分界线是在陡坡脚大陆架慢坡