纯净的英文：
pure
clean
unmixed

参考例句：

Impurity of the water made it unfit to drink.
因为水质不纯净，所以不能饮用。

Not mingled or diluted with extraneous matter;pure.
未掺杂的，无杂质的，纯净的

Clean drinking water
纯净的饮用水

Pure chloride of sodium is not liable to deliquesce
纯净的氯化钠是不易潮解的

We can make water pure by distilling it.
水能藉蒸馏而纯净

Being authentically or genuinely such by birth.
纯种的出身纯正或血统纯净的

Crystal articles made By our factory are purely, transparent and spotlessly white.
本厂的水晶制品，纯净透明，洁白无瑕。

I like the pure azure of the sky.
我喜欢天空纯净的蔚蓝色。

It has clear alt and pure woof.
它高音清澈，低音纯净。

We must ensure the purity of drinking water.
我们必须确保饮用水的纯净。

pure是什么意思：
adj. 纯粹的；纯净的；纯洁的；完全的

All things are pure to the pure.
对洁净的人，凡物都洁净。

But that is pure bluster.
然而这纯粹只是夸夸其谈而已。

He is Spaniard pure and simple
他是一个纯血统的西班牙人

clean是什么意思：
adj. 干净的；整齐的；正派的；公平的
adv. 完全地
v. 使清洁；打扫

a clean getaway; a clean sweep; a clean break.
十足的逃亡；彻底的清扫；彻底的破裂。

This is a clean fight.
这是一场公平的较量。

The spark plug needs cleaning.
火花塞需要清洗一下。

unmixed是什么意思：
a. 未混杂他物的,纯粹的

It was not an unmixed blessing.
这并非完全是件好事。

In his face there was a look of exaltation not unmixed with recklessness
他脸上是一片狂欢大乐的样子，掺杂着不顾一切的神气。

So completely was the love of these two cousins unmixed with anything of jealousy or of envy
堂姐妹俩之间的感情是十分美好的，一点儿也没有掺杂妒忌或是羡慕的成分。