Cobaltinitrite
亚硝酸根合高钴酸盐
🗣️ 情景例句
Five, five, five, seven, five, three, two.
5557532。
It has been a great year for all of us.
过去的一个，对我们大家来说，是辉煌的一年。
The two boys are in the river now.
两个男孩现在在河里。