jacket water heater problem 水套水加热器问题
water jar problem 水壶问题
water jug problem 水罐问题
problem of water 水问题
water problem 水的问题
problem of water shortage 水资源短缺问题
Even as a growing number of coal-burning power plants around the nation have moved to reduce their air emissions, many of them are creating another problem: water pollution.
即使全国各地的火力发电厂已经开始行动减少空气污染物的排放,但是却带来另一个问题——水质污染。
Thirdly, pollution is also a worrying problem—water in rivers and wells becomes undrinkable because of industrial wastes.
另外,因为工业污染,有些水已经不适宜饮用了。
Imagine a swimmer in water over his head You are in deep water when you are facing a problem that you do not have the ability to solve.
VOA: special.2009.05.10
There can be a supply of them, a storehouse of them that can build up in the body, and so day-to-day fluctuations become less of a problem with fat soluble then water soluble vitamins, because the body can go grab them from a storage depot, if you will.
从而在体内建立起一个供应源,一个脂溶性维生素仓库,这样一来,相比起水溶性维生素,脂溶性维生素的浓度不会每天剧烈波动,因为机体可以任意取用体内的储存
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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