Transvaalite
羟钴矿
🗣️ 情景例句
It's going to be hard, but give it your best shot.
事情会很难，你尽力而为就是了。
In a calm sea, every man is a pilot.
平静的海上易驶船。
Really? I thought you were from the States.
真的吗？我还以为你是美国人呢。