Naumannite
硒银矿
🗣️ 情景例句
There are many natural catastroophes occurring in nature.
自然界里有很多自然灾害发生。
I hope you can find your glasses soon.
我希望你很快就找到你的眼镜。
Byrd at once ordered his men to throw out two heavy food sacks.
伯德马上命令他的助手们把两个沉重的食物袋扔掉，