Polymolybdate
多钼酸盐
🗣️ 情景例句
You're welcome.
不客气。
I will have done it by the time you come back.
在你回来之前，我会做完它。[将来完成时，表示将完成…，会做完…]
Other types of bee make their nests in holes in the ground.
其他种类的蜂在地穴里筑巢。