Permolybdate
过钼酸盐
🗣️ 情景例句
Are you worried?
你担心吗
We've only sold our product at trade fairs, not in an on-going sales campaign.
我们的产品只在商展时展售，而没有办促销活动。
In the shop, Lucy got all the things on her shopping list, and took them home.
在商店里，露西把单上所列物品全买齐了，然后把它们带回家。