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1·Macfarlane guessed that the fact that water had to be boiled, together with the stomach-purifying properties of tea meant that the breast milk provided by mothers was healthier than it had ever been.

麦克法兰猜测，水必须煮沸这样的事实，加上茶净化胃的特点，意味着母亲提供的母乳比以往任何时候都更健康。

2·White is cleansing and purifying.

白色很干净并纯洁。

3·KEEP PURIFYING SETTLEMENTS WITH YOUR VIKINGS.

保持与你的海盗净化定居点。

4·It can absorb formaldehyde, purifying the air?

真的能吸收甲醛、净化空气吗？

5·Air-purifying respirators have two advantages.

过滤式呼吸器有两个优点。

6·Heating, cooling, humidifying, dehumidifying, purifying.

加热，冷却，加湿，除湿，净化。

7·Following are recommendations for storing and purifying water supplies.

以下是储存和净化食水的一些建议。

8·The wetland plays a crucial role in producing oxygen and purifying the air.

湿地在产生氧气和净化空气方面有至关重要的作用。

9·In places where the water is not potable , they set up purifying systems.

在那些水质不干净的地方，他们造了过滤器。

10·The absence of emotion is seen as purifying thinking into purely rational form.

如果要净化思维为完全的合理性形式，我们就不能掺杂情绪于其中。

(1)purifying agent净化剂；提纯剂