Corvusite
水复钒矿
🗣️ 情景例句
If you're not sure, then the answer should probably be no.
如果你不确定，那么答案可能就是“不”了。
I didn't see Mr. Jones,but I saw John Smith.
我没看见琼斯先生，但是我看见了约翰·史密斯。
At night, when you really wish to go to sleep, you rarely manage to do so.
到了夜晚，你真想睡了，却很难入睡。