Coltan
钶钽铁矿
🗣️ 情景例句
Sure. It's up ahead to your left.
好的。往前走，在你的左边。
I will get it from my friend.
我会从我的朋友那里得到它。
The train was late but nobody knew the reason for the delay.
火车晚点了，但没人知道为什么。