Cobaltinitrite
亚硝酸根合高钴酸盐
🗣️ 情景例句
Excuse me, where can I find the shoe polish?
问一下，我到哪儿能买到鞋油？
I'll call you up later.
我稍后会打电话给你。
Yes, there must be over two hundred here.
是呀，这儿一定有200多张。