In the past 30 years, fall snow cover has increased in the Northern Hemisphere, but spring snow cover has decreased.
图像由美国密歇根大学的科学家马克·弗兰纳绘制，他表示在过去的30年里，北半球降雪量虽然增加，但是春季降雪量却在下降。
Soon the snow started to fall and entered the nest.
不一会儿，雪开始下起来，飘进了窝里。
They mix with ice in the air and fall to the ground as snow.
它们与空气中的冰混合，然后以雪的形式落在地上。
In addition, global warming melts glaciers and causes snow to fall as rain.
除此之外，由于全球变暖，冰川融化，降雪量减少，降雨量增加。
After being absorbed, the particles of water unite and form clouds; then they fall down in the form of fog, rain, snow, or hail.
原来，水分被空气吸收以后，空气中的水分子就会积聚成云，然后它们会变成雨，变成雪，变成冰雹降落下来。
The light was otherworldly and snow began to fall as the ship slowly advanced to within sight of a beigy-yellowy something moving from west to east, a speck of life behind it.
天光像是来自另一个世界，船缓慢地向前航行时，天开始下起雪来。 可以看见米黄色的动物从西向东移动，随后还有几只跟随。
The trees were standing in rows and were as black as they had been before and they let the snow fall on them and the fringe of forest on the horizon was still there.
树木一排排站在哪里，像以前一样黑黢黢的，就这样让雪掉在他们身上，地平线森林的边缘还在那儿。
I visit the frozen North and wait for snow to fall, "Libbrecht said in a recent email interview."
近几年，我一直访问北部寒冷的地区，在那里等待下雪。
When he surfaces from the frigid waters, he's grateful for the teahouse on the beach. Stripped of his gear, he warms up by sipping miso soup as he sits on the floor watching the snow fall.
他从寒冷的水域出来，愉快地来到海滨茶馆，脱去装备，坐在地板上，一边欣赏飘落的雪花，一边喝着酱汤暖着身子。
But then the snow began to fall again and Mr. Yi, the farmer-turned-noodle vendor, began to smile.
雪又开始下了起来。易，这位面条商贩农，却笑了。
Not all water vapour in the atmosphere turns to precipitation, and for the snow to fall, water vapour should concentrate on ice crystals first.
寻找适合进行人工干预的气象条件，然后喷洒化学药品，大约需要出动8至10架飞机。 大气中并非所有的水蒸汽都能转化为降雨，至于降雪，水蒸汽首先应该形成冰晶。
The middle and eastern part of Inner Mongolia and northeast part of China will see temperatures fall 8 to 12 degrees Celsius and get moderate snow.
内蒙古中东部和东北地区气温将下降8-12摄氏度，并有中雪。
Some of the ammonium, or NH4+, ions generated during subsequent reactions fall back to Earth in snow and are preserved in ice cores, where they linger as signs of the cataclysmic event.
一些在后来的反应中形成铵离子，通过下雪回到地球被保存在冰核中，成为发现这巨大事件的证据。
In the winter, heavy snow falls in the Sierra Nevada Mountains and Yosemite. The snow usually begins to fall in the month of November.
在冬天，内华达山脉和约塞米蒂每年都有大雪，这里通常是每年的11月份开始下雪。
No. 27 was only a few yards distant, but there had been a slight fall of snow, and Father and Mother Darling picked their way over it deftly not to soil their shoes.
二十七号距离他们家只有几码远，不过下过一点小雪，所以达林先生太太得灵敏地挑着路走，免得弄脏了鞋。
But that would have to happen quickly before snow fall would make many areas inaccessible for the winter.
然而，这决胜投票必须要冬季到来之前迅速举行，因为冬季大雪会使许多地区交通断绝。
We knew we had a secret all our own. We had helped the snow to fall once again.
我们知道自己拥有这一个秘密，落下来的雪里有我们的贡献。
Thousands of people still waiting for food aid in the most remote areas of the disaster zone endured fresh misery yesterday as heavy snow began to fall across northern Japan.
在受灾区中的偏远地区，仍然在等待食物救急的上千民众再次遭受新的灾害，昨天日本北部开始普降大雪。
Only an exceptionally heavy snow fall might temporarily dislocate railway services.
只有非同寻常的大雪才可能暂时打乱铁路运行。
The snow stopped fall-ing downwards, it flew horizontally.
雪不在跌落了，它水平飞行。
One would say, to see all these snow-flakes fall, that there was a plague of white butterflies in heaven.
见了这种成团的雪落下来，就会说天上有成千上万的白蝴蝶。
Of course all of us know that rain and snow fall from clouds. But have you ever wondered how raindrops and snowflakes happen to be in clouds?
当然，我们都知道：雨和雪是从云里落下的。但是，你想过没有：雨点和雪花怎么会在云里呢？
The snow continued to fall heavily.
雪继续下得很大。
Experts sometimes have difficulty estimating where, when or how much snow will fall.
专家有时很难预测降雪的地点、时间和降雪量。
But in the example of snow retention, evenly spacing both rate-of-fall and rate-of-residence-in-the-clouds values will give different distributions of result.
但是在雪的滞留试验上，将雪的下降率参数值与雪在云层里的停留率参数值都设为均等的间隔将会得出不同的结果分布。
As the snow began to fall, Sadie experienced the full deprivation of living in Western China.
当开始降雪时，莎蒂感受到生活在中国西部的贫困。
As the snow began to fall, Sadie experienced the full deprivation of living in Western China.
当开始降雪时，莎蒂感受到生活在中国西部的贫困。
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