为了方便喝水，你需要买一个可多次使用的水杯，一是它比较省钱，二是你可以带着水杯到处走，想喝就喝，这样无形之中喝的水就多了。
Buying a reusable water bottle and refilling it will help you save money. It will also help you to drink more water because you can take the bottle with you wherever you go.
变阻器单台产品在电路中可作串、并联使用，也可多台并机使用。
Rheostat single products in the circuit can be used for series and parallel use can also be multiple, and machine use.
我们可以借助一些自然疗法来增强机体的免疫力。在对症的情况下，抗生素的确是不可多得的灵丹妙药，但我们需要加以选择地使用。
There are natural ways to boost your body's defence system. In the right circumstances antibiotics are invaluable, but we have to use them selectively.
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