Polyanion
聚阴离子
🗣️ 情景例句
No, thanks.
不用了， 谢谢。
We feel your product is too specialized for mass marketing.
我们认为你们的产品对广大市场而言太专业化了。
A man who had broken his right leg was taken to hospital a few weeks before Christmas.
圣诞节前几周，某人摔断了右腿被送进医院。