Permolybdate
过钼酸盐
🗣️ 情景例句
I'm glad for the dog.
我真替那只狗高兴。
It is easier to give good counsel than to follow it.
提出忠告易，照著办事难。
How did the bees know exactly in which diection to fly?
蜜蜂是怎样确切地知道朝哪个方向飞呢？