ion exchange resin

例句：

1. 1. Ion exchange resins are usedin water treatment to remove pollutants.
   离子交换树脂用于水处理，以去除污染物。
2. 2. The ionexchange resin is a crucialcomponent of the desalination process.
   离子交换树脂是脱盐过程的关键组成部分。
3. 3.The ion exchange resin was usedto purify the water before it wasreleased into the river.
   离子交换树脂被用来净化水，然后将其释放到河流中。