By contrast, when rains made herdsmen's lives easier, they could release surplus young labour for the violent sport of raiding other groups.
相比之下，雨水充足时牧民的生活就会好过些，这时他们就能腾出剩余的年轻人对其他的群体进行掠夺。
When rains fall and winds blow, the mama bird sings, "Hush, little chickadees. Never you fear. There, there. You're safe now, and I am right here."
刮风下雨的时候，鸟妈妈会唱：“快点儿，宝贝们，不要害怕，你们很安全，妈妈就在这儿。”
Almost as quickly as they appeared, these small plants die away. But they have developed special ways of ensuring the life of another generation when rains come again.
这些小动物很快就流失了，几乎就象它们长出来时那样敏捷，但它们已生长了特别体例来包管鄙人次降雨来时下一代的生命。
It's bad for cycling when it rains.
下雨的时候骑自行车会很困难。
When it rains, all the rain drips down right on the asparagus.
每当下雨的时候，所有雨滴都刚好落在芦笋上。
What do you do in your cottage when it rains like this?
像这样下雨的时候，你在自己的小屋里干什么？
It can be washed out when it rains or it can be released to the atmosphere, whereas phosphorus combines with calcium and iron, and can be preserved in the soil for thousands of years.
它可以在下雨时被冲刷掉，也可以释放到大气中，而磷与钙和铁结合，可以在土壤中保存数千年。
When it rains, the adults emerge and congregate to mate at temporary ponds.
下雨时，成年企鹅们会出现并聚集在临时出现的水塘里进行交配。
But there've been times in the past when monsoon rains soaked the Empty Quarter and turned it from a desert into grassland that was dotted with lakes and home to various animals.
但过去也有过一些时候，雨季的雨水浸透了这片“空白之地”，把它从沙漠变成点缀着湖泊的草原，成为各种动物的家园。
We can collect rainwater when it rains heavily, and use it to water plants.
我们可以在下大雨时收集雨水，用来浇灌植物。
When the long rains fall from March to May things are much quieter, there are fewer tourists and accommodation prices come down, but also note that some places close completely.
从三月到五月是长长的雨季，一切都沉静下来，这时几乎没有游客，食宿价格也会下跌，但要注意有些地方是完全关闭的。
They spring up quickly after rains, when the surface is moist. Then, for a brief time, the desert can be literally carpeted with color.
当雨后地表还潮湿时它们就迅速发芽，然后在一个短时间里，给沙漠铺上绿色地毯。
When it rains hard, landslides sweep topsoil down to the sea.
下大雨的时候，山崩会把表层泥土席卷到海里。
When it rains, a traditional compressor kicks in to cut moisture.
到下雨时，一台普通的压缩机就足以降低湿气。
In many cases, this means they are so heavily silted that they dry up when the rains cease and flood during summer when they reach their peak.
这些水库的情况多是如此：在雨水少的时候干涸，在洪水到来的时候则因蓄水量到达顶峰而没顶。
A country that became best known for famine, when Mr Gill first covered it as a television reporter, Ethiopia remains uncomfortably close to the brink every time the rains fail.
当时吉尔先生还是一个电台的记者，并且首次报道了此事。从此，只要是不下雨，埃塞俄比亚就会在饥荒的边缘地带游荡。
The rapid melting is increasing summer river flows - but it raises the prospect that when the glaciers are gone, flows will diminish and depend entirely on the rains.
冰层迅速融化正在增加夏季河水的流量，预示着当冰川消失，河水流量就会减少，并完全依赖于雨水。
When it rains, the sewage spews all over.
每当下雨的时候，下水道的脏物就会到处乱喷。
When the monsoon rains arrive, between June and September, a verdant carpet freshens tilled fields and pastures (at right.)
当季风带来的降雨来临的六月至九月间，田野铺上了一层生机盎然的翠绿地毯(右)。
This will ensure that your roof doesn't leak when it rains.
这就保证下雨天屋顶不漏水。
When it thunders you'll feel the vibration. When it rains you'll feel the mist. '.
打雷时会感到振动，下雨时能感到水雾。
It is right at the drip line of the tree. So when it rains, all the rain drips down right on the asparagus.
它们刚好种在大树的滴水线下，所以每当下雨的时候，所有雨滴都刚好落在芦笋上。
When it rains hard, landslides sweep topsoil down to the sea. This pushes fish farther out, beyond the range of the fishermen's modest boats.
如果下大雨，泥石流把表层土冲到海里去，而这些泥土又把鱼儿赶远了，渔夫们破旧的小船追不到鱼。
The rain continued: "From now on, when it rains, each of you will stretch across the sky in a great bow of color as a reminder that you can all live in peace."
雨继续说：“今后，当下雨时，你们所有的颜色将横跨填空，形成一道巨大的彩虹，以提示你们七种颜色能友好共处。”
When it rains, umbrellas are needed. What kind of umbrellas do you usually choose?
下雨的时候，雨伞就派上了用场，平常你用的雨伞长什么样呢？
When seasonal rains fall, water collects behind the dam.
当季节性降雨开始，雨水便会聚集在砂坝之后。
Their manure contains phosphorus, which, when it rains, runs off into lakes and estuaries, depleting oxygen, killing fish, stimulating algae overgrowth and emitting greenhouse gases.
它们的排泄物含有磷，下雨的时候，将被冲刷进入湖中和江河口，耗尽水中的氧气，杀死鱼类，刺激藻类的生长，并且释放温室气体。
Their manure contains phosphorus, which, when it rains, runs off into lakes and estuaries, depleting oxygen, killing fish, stimulating algae overgrowth and emitting greenhouse gases.
它们的排泄物含有磷，下雨的时候，将被冲刷进入湖中和江河口，耗尽水中的氧气，杀死鱼类，刺激藻类的生长，并且释放温室气体。
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