評(píng)論
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Two's company, three is inconvenient.
兩只情侶其樂(lè)融融，三只就多有不便了。
But in any case, all male frogs are equipped with dry thumbs,
無(wú)論如何，雄蛙都需要用干燥的腳趾，
which enable them to get a vice-like grip on their moist partners.
如老虎鉗般緊緊抓住雌蛙濕潤(rùn)的皮膚。
It's a case of first come, first served.
先來(lái)先得。
Living in such a humid environment means jungle frogs are less tied to puddles and pools.
在這種潮濕的環(huán)境下生活，使得樹(shù)蛙可以擺脫水塘的束縛。
And these even lay their eggs out of water.
因此它們無(wú)需在水中產(chǎn)卵。
There's little chance of them drying out, and up here they're safer from predators.
卵干死的幾率很小，在這里，也能免于被掠食者吃掉。
Surprisingly, it doesn't rain every day in a rainforest,
雨林雖然不是天天下雨，
but more still falls here than anywhere else on Earth.
但是這里仍然比地球上其他地方下的多。
On average, over two metres a year.
平均年降水量可達(dá)2米。
A single tree can suck up hundreds of tons of water each year.
一棵樹(shù)每年可吸收幾百噸的水。
But the trees can't use all this water,
不過(guò)樹(shù)也無(wú)法全部喝掉這些水，
so much of it returns to the air as vapour, forming mist and clouds.
多數(shù)被轉(zhuǎn)換成了水蒸氣從而形成了薄霧和云。
In the Amazon, the largest unbroken stretch of rainforest in the world,
在亞馬遜，世界上最大的原始森林，
half of all the rainwater that falls comes from clouds produced by the trees themselves.
有半數(shù)的降水被樹(shù)木再次轉(zhuǎn)變成云和降水并循環(huán)使用。
