Pervanadate
过钒酸盐
🗣️ 情景例句
I'd love to come. But I have to be on duty this weekend night.
我是想过来，但我周末晚上得值班。
Man is a god or a devil to his neighbour.
一个人对邻居来说，不是上帝，便是魔鬼。
That sounds like a good idea. I have a few friends I could ring to see if they're free.
听起来是个好主意。我可以打电话给我的几个朋友看看他们是否有空。