它以雨的形式落下。
From what I remember, water changes back and forth from water in lakes and oceans to vapor, and then back to water again when it falls as rain or snow, as precipitation.
根据我的记忆，水往复地变化，从湖泊和海洋里的水变成水蒸气，然后当它以雨或雪——也就是降水的形式落下时又变成水。
Rain falls through the funnel into the jar below.
雨水通过漏斗落进下面的罐子里。
Rain falls in summer; snow falls in winter.
夏天下雨，冬天下雪。
If sufficient rain falls the next year to form another lake, the eggs hatch, and once again the shrimps pass rapidly through their cycle of growth, adulthood, egg-laying, and death.
如果第二年有足够的雨水形成另一个湖泊，卵就会孵化，小虾会再次快速地经历生长、成年、产卵和死亡的循环。
铅弹如雨！
到处都在下雨。
Since rain falls to the ground, it can easily be collected into tanks.
雨水落到地面上，因此很容易将其收集到水箱中。
A sweet rain falls on the parched seedlings.
久旱的禾苗逢甘雨。
Bella, a human teenager, moves to the Pacific Northwest, and there, amid the rain, the ferns and the redwoods, she falls in with rival gangs of vampires and werewolves.
人类少女贝拉，搬到了西北太平洋地区居住。该地区雨水充足，到处都是蕨类植物和红杉林，在那儿她遇到了敌对的两派势力：吸血鬼和狼人。
Conversely, the rain that falls from an old storm has more light oxygen in it-and that is the sort of rain that tends to fall on land.
相反，那些已形成一段时间的风暴所降落的雨水则含更多较轻的氧分子，而这些雨水一般降落在陆地。
Dust that cools a desert can change local airflow patterns and lessen the amount of rain that falls in surrounding areas.
为沙漠降温的沙尘可以改变当地的空气流通方式并且减少周边地区的降雨量。
Much of the rain that falls on the highlands of Angola makes a long, slow journey to Botswana's Okavango Delta.
降在安哥拉高地上的雨水经过漫长而潺缓的旅行，来到博茨瓦纳的奥卡万戈三角洲。
The draining of Kazakhstan's once-vast Aral Sea has made regional temperatures hotter in summer and colder in winter, and rain now rarely falls.
哈萨克斯坦曾经广阔的咸海的排干工程使得那里的夏天天气异常炎热、冬天天气异常寒冷，而且很少下雨的情况。
There is growing evidence that global warming is speeding up the hydrologic cycle-that is, the rate at which water evaporates and falls again as rain or snow.
越来越多的证据显示，全球暖化已经使水文循环加速，换言之，降雨、落雪、再蒸发的速度越来越快。
No matter how hard the rain falls and the wind blows, the police keep to their posts.
无论风多大、雨多急，警察一直坚守在岗位上。
These two literary delights still linger in my memory — and there is the other, the infants' classic: "the rain falls pit-a-pat, the tide comes up the river."
这两段通过文字引起的快乐至今仍留在我的记忆里- - -此外还有，就是幼时的古诗：“雨点滴滴下，潮水涨河上。”
The high-altitude desert of Leh in northern India falls in the rain shadow of the Himalayas, receiving as little precipitation as the Sahara.
印度北部Leh的高纬度的沙漠进入了喜马拉雅上的雨影区，像撒哈拉沙漠一样有一点仓促。
Most of India’s crucial rain is brought by the summer monsoon, which falls, with luck, in just a few weeks between June and September.
基本上印度最主要的降雨都是由夏季季风带来的。 即使在好的年节，这些雨水也只集中在六月和九月之间的一小段时间里。
Even ecosystems, such as tropical rain forests, which don't have variable rainfall, also have patch dynamics due to periodic storms and tree falls.
甚至生态系统，比如热带雨林，没有可变的降雨量，但由于定期下暴雨和减少树木，该地带有了变化的内在动力。
The statistics can be misleading: in places where rain falls copiously and evenly from the skies, withdrawals will be small.
统计数据可能带有误导性，在那些年降雨量充沛并且平稳的地方，管道用水需求将比较低。
When the collected water becomes heavy enough, the water droplet falls to the earth as rain.
水气凝结到一定程度就形成了小水滴，其重量足以使它落到地上，即为雨。
"When the toxic cloud falls down, it ACTS like acid rain, damaging plants and monuments," Ribeiro added.
“当毒云落下，它就像酸雨一样，破坏着植物和古迹，”里贝罗补充说。
Surviving on the scant rain that falls on the high desert, the surrounding natural scrubland USES far less water. The scrubland, shown in the upper left corner of the image, is tan and pale blue.
为了在降水稀少的高地沙漠存活下来，周围自然形态的灌木丛则消耗很少的水分，可以看到这些分布在图片左上部的灌木丛是黄褐色和灰蓝色的。
Three or four times during the night the wind picks up, fog blows through, and light rain falls. Sudden weather changes are common, especially in the highlands.
夜间起了三四次风，雾匆匆消散，小雨落下来，老天的脸说变就变，简直就是家常便饭，尤其在高原地区。
The wind falls, the rain slides silver down the glass.
一阵风袭来，雨滴闪烁着银光落在草叶上。
On average, people are extracting for their own USES less than a tenth of what falls as rain and snow each year.
平均而言，人们对某些水资源利用，比如每年的雨雪，利用率还不到十分之一。
By some estimates acid rain falls on a third of all agricultural land; some climate experts predict long-term reductions in the country's vital rice crop.
据估计，三分之一的可耕地为酸雨区，一些气候学家预测在长期范围内该国的粮食作物将出现减产。
The rain falls the whole night.
雨，滴滴答答的下了一整夜。
But Africa's rain falls more variably than, say, Norway's, and its DAMS often operate below capacity.
但是非洲的降雨量非常不稳定，比方说与挪威的降雨量相比，并且其水坝经常达不到满负荷运转。
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