During the test, the four models were taken into account, (1) water filled in back fissures, (2) front flood fluctuation, (3) rain-fall on slope surface, and (4) combination of above three models.
在试验过程中，主要考虑了4类模型：(1)后缘裂隙充水模型；(2)前缘洪水涨退模型；(3)坡面降水模型；(4)各种补给并存模型。
它们会像雨一样降落。
Spots of rain had begun to fall.
雨点已经开始落下来了。
小雨开始飘落。
Rain begins to fall and peach trees blossom.
雨开始下，桃树就开花了。
The rain continued to fall all afternoon.
这场雨整整一下午都下个不停。
Though plenty of rain may fall on savanna during the year, for at least part of the year little does, creating the drought stress ultimately favoring grasses.
尽管一年中大草原上可能会有大量降雨，但至少有一段时间是降雨很少的，造成干旱压力，最终有利于牧草生长。
Awakening of Insects signals a rise in temperature and increased rain fall.
惊蛰标志着气温上升，降雨量增加。
开始下雨了。
Rain may not fall there for months or years.
那里可能数月或数年都不会下雨。
沛然降雨。
A thin rain began to fall as he turned from the high road into a narrow lane.
当他从大路拐进一条小胡同时，开始下起小雨来。
开始下雨了。
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。
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。
Devoid of trees at the time of Darwin and Hooker's visits, the little rain that did fall quickly evaporated away.
在达尔文和胡克访问时还没有树木，些许雨水落下来就很快蒸发掉了。
They are notorious for lending people umbrellas when the sun is shining and asking for them back when rain starts to fall.
其昭然行径犹如于光天烈日底下向人们出借雨伞却在积云将雨时要人把伞还去。
The Scottish Hebrides are breathtaking, especially when the rain doesn't fall; you can see how Mendelssohn was inspired to write an overture.
苏格兰的赫布里底群岛真是令人激动，特别是在没下雨的时候；你会明白门德尔松是怎么受到激发写出了一首序曲。
As they rise to cross the mountains, the winds are cooled, and their moisture begins to fall as rain.
当气流升高跨越这些山脉时，风的温度就降低了，风中的水分形成降雨。
High pressure makes it hard for clouds to form, and thus for rain to fall.
高压很难形成云，提供降雨。
So in spite of the apparently high rate of accuracy, rain will only fall on 30 per cent of the trips for which they forecast rain.
所以，尽管预报的准确率高达80%，但在预报有雨的日子里，出门的一个小时内真碰上雨的可能性只有30%.
More rain and snow fall on Greenland in the winter.
现在格陵兰冬天的降雨和降雪都增加了。
Side by side: the billions of stars of the Milky Way and the Northern Lights appear to fall like rain over mountains and a moody lake.
肩并肩：银河系的亿万颗星星、下雨般落到山上的极光，以及变化多端的湖面。伊莱·亚森先生等待数日拍下来的美景。
Let my teaching fall like rain and my words descend like dew, like showers on new grass, like abundant rain on tender plants.
我的教训要淋漓如雨，我的言语要滴落如露，如细雨降在嫩草上，如甘霖降在菜蔬中。
Just after lunch the rain began to fall.
吃过午饭，雨就开始下了。
The droplets were too small to fall as rain, perhaps because the laser just wasn't strong enough or did not hit enough material in the sky.
水滴太小不足以降雨，或许是因为激光不够强大或未击中空中足够多的颗粒。
The droplets were too small to fall as rain, perhaps because the laser just wasn't strong enough or did not hit enough material in the sky.
水滴太小不足以降雨，或许是因为激光不够强大或未击中空中足够多的颗粒。
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