冰川融化成水流，积雪让位给绿草。这过程是缓慢的，然后给人类生活方式带来的改变却是深远的。
Ice turned to water and snow gave way to grass, and the result was slow but profound changes in the way that humans lived.
无数的鸟在阳光明媚的蓝天中飞翔，这里你只能听到鸟的叫声以及当水流缓慢流经草的时候，这些草所发出的柔和的声音。
Hundreds of birds fly in a sunny blue sky. The only sounds are bird calls and the soft noise made by tall grasses as the water slowly moves them.
“这股水流每年来到三角洲，缓慢前行、滋养生命，数千年来人们都赖此为生。”他说。
"It's a slow and creeping and nutrient life-bringing pulse of water that comes into the Delta every year and people have been living with it for thousands of years," he said.
下游水流缓慢，淤积的冲积土愈来愈多，形成一个有许多岛屿的巨大三角洲。
Downstream water flow slow, siltation of the alluvial soil more and more, forming a great many of the Delta islands.
河流进入“老年”后，它的水流甚至更加缓慢。
When the river reaches "old age," its current moves even more slowly.
水流更加缓慢。
这里河谷开阔，大部分是平浅谷地，水流缓慢，多湖塘沼泽。
Here are broad river valleys, most of which are flat and shallow. The current here is slow and there are many lakes and swamps.
该海域的潮汐水流不受陆地径流的影响，各种潮汐不等现象变化缓慢。
Because the tidal current in this sea area is not affected by runoff, all kinds of tidal disparities change slowly.
小河里的水流动缓慢，我说不出水往哪个方向流。
The stream was so sluggish that I could hardly tell which way it flowed.
它们生活在沼泽，湿地和水流缓慢的溪流中，主要分布在亚马逊热带丛林和奥里诺科河盆地。
Anacondas live in swamps, marshes, and slow-moving streams, mainly in the tropical rain forests of the Amazon and Orinoco basins.
钉螺喜栖水流缓慢的潮湿荫蔽地区，因此血吸虫在水岸边，湖沼地区及芦苇滩洼地上最多。
Oncomelanias like to stay in wet and shady places of slow-running water, so oncomelanias are mostly fund near Banks of river, areas of lakes and marshes and depressions of beds of reeds.
像浮萍这样的植物在静止和缓慢移动的水域漂浮，而那些长着根和易曲的茎的植物却可以在湍急的水流中生长。
Plants like duckweeds float on the surface of still and slow-moving waters, while those with roots and flexible stems can stand in swift-flowing streams.
像浮萍这样的植物在静止和缓慢移动的水域漂浮，而那些长着根和易曲的茎的植物却可以在湍急的水流中生长。
Plants like duckweeds float on the surface of still and slow-moving waters, while those with roots and flexible stems can stand in swift-flowing streams.
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