It's constantly being recycled through evaporation and condensation.
它通过蒸发和冷凝不断循环。
The sand acts like a sponge and filters the water and slows evaporation.
沙子像海绵一样过滤水，并减缓蒸发的进程。
Less solar energy is lost in evaporation at the frigid poles than in the tropics.
与热带地区相比，在寒冷的两极蒸发中损失的太阳能更少。
The evaporation from the leaf surface causes a constant compensatory suction of water.
叶片表面的蒸发作用产生了持续的代偿吸水性。
Water leaves a lake via outflowing rivers, by soaking into the bed of the lake, and by evaporation.
水通过外流河、渗透进河床以及蒸发离开湖泊。
Furthermore, if the water ice was mixed in with rock and dust, it would be protected from evaporation.
此外，如果水冰与岩石和灰尘混合在一起，它就不会蒸发掉。
Increasing salinity caused by the evaporation resulted in the extermination of scores of invertebrate species.
蒸发引起的盐度增加导致了无脊椎动物物种的灭绝。
It depends on the rate at which water enters the lake, and that depends on the rainfall and the evaporation rate.
这取决于水进入湖泊的速度，而这又取决于降雨量和蒸发率。
One of these is the subtraction of water from the ocean by means of evaporation—conversion of liquid water to water vapor.
其中之一是通过蒸发的方式，把液态水转化为水蒸气——来减少海洋中的水分。
Since lake levels are controlled by rates of evaporation as well as by precipitation, the interpretation of such levels is ambiguous.
由于湖泊水位是由蒸发率和降水量控制的，对这种水位的解释是模糊不清的。
The oxygen isotope ratio of the ocean changes as a great deal of water is withdrawn from it by evaporation and is precipitated as snow to form glacial ice.
随着大量的水通过蒸发被抽离，并以雪的形式沉淀形成冰川冰，海洋中氧同位素的比率就发生了变化。
Clouds are formed from the evaporation of the oceans' water that is warmed by the Sun and rises high into the atmosphere, condensing in tiny droplets on minute particles of dust.
云是由海洋中的水分被太阳加热蒸发而形成的，这些水分上升到大气中，凝结成微小的水滴，附着于微小的尘埃颗粒。
The soothing, cooling effect is caused by the evaporation of the sweat on the skin.
凉爽怡人的效果是由皮肤上汗液挥发所致。
Struggling with an evaporation of advertising and a downward drift in street corner sales, The New York Times intends to introduce a "metered" model at the beginning of 2011.
为了应对广告的减少和街角销售的下滑，《纽约时报》打算在2011年初引进一种“计量”模型。
Evaporation rates are rising, along with temperatures.
蒸发率随着温度上升而不断提高。
It is recycled endlessly, as rain, snow or evaporation.
它可以再生，下雨下雪或者挥发。
More efficient photosynthesis means less evaporation from croplands.
更高效的光合作用效率着农田蒸发的减少。
Other things being equal, evaporation is the faster, the greater is the wind.
在其它条件相同时，飞速越大蒸发越快。
Short rainy seasons demand water storage, ideally in places where evaporation is low.
短暂的雨季需要储水，理想的是在蒸发低的地方进行储水。
Clothing that is impermeable to water prevents the evaporation of sweat from the skin.
穿着不透水的衣服会阻碍体表汗液的蒸发。
Volcanic heat would drive the chemical reactions, as well as causing lots of evaporation.
火山的热量将驱动化学反应，同时也能引起大量的蒸发。
In older vehicles, you can prevent evaporation by making sure the cap is tightly secured.
对于老汽车，你可以通过检查油箱盖子是否拧紧来避免汽油蒸发。
Food stored in the smaller pot is kept from spoiling through a simple evaporation process.
通过简单的蒸发过程，来保存小罐中的食物不会变坏。
From the evaporation of water, people know that liquids can turn into gases under certain conditions.
根据水的蒸发现象，人们知道液体在一定的条件下能变成气体。
Marbling and fat around edges helps hold in water. Water losses are from evaporation and drip losses.
大理石纹和切口脂肪有助于保水，水分损失源于蒸发和滴水损失。
If you don't drink enough water you compromise the evaporation process you skin USES to keep you cool.
如果你没有喝足量的水，可以使你皮肤凉爽的蒸发过程就会受到损害。
The evaporation from a large oak or beech tree is from ten to twenty-five gallons in twenty-four hours.
一棵大橡木或榉物二十四小时内蒸发的水份可高达十到二十五加仑。
Lacking an outlet, the Caspian Sea loses water only by evaporation, leading to the accumulation of salt.
由于没有排水口，里海的水量流失只能依赖蒸发，这也造成湖水中盐的积聚。
The pipes, buried underground to avoid loss to evaporation, would irrigate fields of Eucalyptus grandis.
输水管道将被深埋地下以避免水分蒸发，输送至沙漠的水则被用来培植广林尾巨桉。
The pipes, buried underground to avoid loss to evaporation, would irrigate fields of Eucalyptus grandis.
输水管道将被深埋地下以避免水分蒸发，输送至沙漠的水则被用来培植广林尾巨桉。
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