Hydrohausmannite
水黑锰矿
🗣️ 情景例句
Now for the hard part.
现在到了最难的部分。
Americans are hight mobile, and therefore may find it difficult to became deeply involued with other.
美国人的流动性，大，因此你会发现和他人深交很难。
The inspector then asked the old lady to try to check what was missing by the next day and advised her not to stay alone in the flat for a few nights.
巡官请老妇人在次日之前设法查清丢了些什么，并劝她几夜之内不要独自一人在公寓过夜。