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Separating our water supply from sewage and learning how to do wastewater treatment was a really important part of reducing infectious diseases.
把净水和污水分开,以及学会污水处理的方法,是减少感染性疾病传播方法中的重要部分
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You ignite the food and burn it, and you see how many degrees centigrade the water gets raised, and that's the measure of calories.
点燃食物使其燃烧,然后观察水的温度上升了多少,就测量了这种食物的卡路里
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And then for some reason, that nobody understands, 16/15 he decided to multiply again by 16/15, and that's how we get 32 for freezing of water and 96 in his words for the temperature in the mouth or underneath armpit of a living man in good health.
然后，因为同样的原因，没人搞得明白，他决定再乘以，现在水的冰点变成了32度,而96度，拿他的话来说,是健康状况良好的人,口腔或腋窝的温度。
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The amount of water that you need to have the optimal sort of concentrations of things is determined by how much urine your kidneys produce and how much they excrete each day.
为了保持体内物质的理想浓度,所需的水量,取决于肾脏每天产生,以及排出体外的尿量
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Well how much sense does it make to ship water to the U.S. from France?
从法国进口水到美国有意义吗
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Okay, how little plain water was actually consumed.
好,所喝的白开水很少
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They would bomb it, they would burn it, they would put it in this container inside water, and see how high the water temperature raises and that would give you a sense of the number of calories that it has.
研究人员会燃烧它,放入浸在水里的量热器,然后观察水温上升了多少,我们就对这种食物热量有所了解了
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You need to know if it's an equilibrium, and you also need to know how many components you have in your system So, a glass of ice water with an ice cube in it, which is a heterogeneous system, has only one component, which is water, H2O.
要知道它是不是平衡的，你还需要知道,你的系统中有多少组分,一杯放了冰块的水，虽然它是个非均匀系统，但它只有一种组分，那就是水。
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The fascinating part about this layer is that it solves the problem for phospholipids about how to exist in water when half of you wants to be in oil, and that the water soluble part of the top leaflet here, of the top points up into the water, and the fatty acid chains point down.
这层膜的迷人之处在于,它解决了磷脂,如何存在于水中和油脂中的问题,水溶性的顶端部分,向上插入水中,而脂肪链则指向下
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