Colbranite
[化] 硼镁铁矿
🗣️ 情景例句
It's a problem, isn't it?
这确实是个问题，不是吗？
It took me an hour to walk there.
走到那里花了我一小时。
OK. Let's buy some more this afternoon.
好吧，我们下午再多买点。