Natronbiotite
钠黑云母
🗣️ 情景例句
And I would like to introduce the young man
现在我希望向大家介绍这位年轻人
The roofer is patching the roof with metal.
屋面防水工在用铁皮修补屋顶。
I will be more careful.
我会小心一些的，