Sweat is a great cooling system, but if you're sweating a lot on a hot day, you could be losing too much water. Then you need to put liquid back in your body by drinking plenty of water so you won't get dehydrated.
出汗是很好的降温系统。但是，如果你在天热的时候出了很多汗，你就可能流失过多的水分。这时，你就需要通过大量喝水来补充体内水分，不然你就会脱水。
Why does sweat smell? Sweat by itself doesn't smell at all. It's the bacteria that live on your skin that mix with the sweat and give it a stinky smell. And when a person reachespuberty, special hormones affect the glands in the armpits-these glands make sweat that can really smell.
那么，汗水为什么会有味道呢？汗水本身是没有味道的。但皮肤中的细菌和汗水结合起来就会产生一种臭味。当人到了青春期之后，就会在腋窝的汗腺中产生一种特殊的激素，使得汗水闻起来有种汗臭味。
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