it

2731 篇文章
but water, scarce thought it is, has also, like the wind, shaped the land itself.
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but water, scarce thought it is, has also, like the wind, shaped the land itself. 尽管水很少 但它也和风一样 造就了各种地形

that for most of the year they would be unable to cross it.
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that for most of the year they would be unable to cross it. 它们一年中大部分时间都无法穿越这里

and that's enough to see it through many months of drought.
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and that's enough to see it through many months of drought. 这足以帮助它们度过几个月的旱季

are ready to take full advantage of it.
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are ready to take full advantage of it. 准备充分利用雨水

and the pleats on its trunk enable it to expand rapidly.
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and the pleats on its trunk enable it to expand rapidly. 茎上的皱褶使之能迅速膨胀

and when it does arrive
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and when it does arrive 一旦雨水到来

animals and plants have to be ready to make the most of it.
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animals and plants have to be ready to make the most of it. 所有动植物都必须 做好准备尽量地利用它们

But it is infrequent
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But it is infrequent 可是降雨次数很少

but it will not remain for long.
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but it will not remain for long. 因为它们不会保留多久

In an hour or two the sun will have burnt it off
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In an hour or two the sun will have burnt it off 1~2小时后 太阳将使它们蒸发