David Attenborough once said if he could be any animal， hewould be a sloth—because he would have a good life， with“nothingmuch to do”. Maybe he was talking about the fact that sloths are theslowest-moving mammals in the world. In fact， it will take you less timeto read this text than it takes a sloth to move a few meters.

大衛(wèi)·愛(ài)登堡（世界自然紀(jì)錄片之父）曾經(jīng)說(shuō)過(guò)，如果他能變成任何一種動(dòng)物，他會(huì)變成一只樹(shù)懶———因?yàn)檫@樣他可就過(guò)上好日子了，那就是“無(wú)所事事”。也許他說(shuō)的是樹(shù)懶是世界上行動(dòng)最慢的哺乳動(dòng)物。事實(shí)上，你讀這篇文章所花的時(shí)間比一只樹(shù)懶移動(dòng)幾米所花的時(shí)間還要少。

Slow movers and eaters它們行動(dòng)遲緩且進(jìn)食慢

Sloths travel fewer than 40 meters a day， onaverage2. They move slowly because they mostly eatleaves3， which don’t give them enough energy tomove quickly. It could take them as long as 30 daysto digest4 one leaf！ But this doesn’t affect5 theirpower. Sloths are about three times stronger than theaverage human.

樹(shù)懶平均每天行走不到40 米。它們行動(dòng)緩慢，因?yàn)樗鼈冎饕詷?shù)葉，樹(shù)葉不能給它們提供足夠快速移動(dòng)的能量。它們可能需要長(zhǎng)達(dá)30 天的時(shí)間來(lái)消化一片葉子！但這并不影響它們強(qiáng)壯有力。樹(shù)懶比普通人大約強(qiáng)壯三倍。

Tree hangers6它們是樹(shù)枝掛件

Sloths spend up to 90% of their lives hanging upsidedown in trees—mostly sleeping. A sloth sleeps between 15and 20 hours each day. Sometimes they fall7， and that’sokay！ They can fall up to 30 meters without getting hurt8，and on average they fall out of trees about once a week.And if they fall in water， that’s okay， too. Sloths aregood swimmers， and they move faster in water than theydo in trees！

樹(shù)懶一生中有近90%的時(shí)間都倒掛在樹(shù)上———大部分時(shí)間都在睡覺(jué)。樹(shù)懶每天要睡15到20個(gè)小時(shí)。有時(shí)它們會(huì)掉下來(lái)，但沒(méi)關(guān)系！它們可以從30米的高空墜落而不受傷，而且平均每周大概會(huì)從樹(shù)上掉下來(lái)一次。如果它們掉進(jìn)水里，也沒(méi)關(guān)系。樹(shù)懶擅長(zhǎng)游泳，它們?cè)谒械囊苿?dòng)速度比在樹(shù)上更快！

Their fur9 is a home for others它們的皮毛是其他動(dòng)物的家園

Many different insects10 live in a sloth’s fur. It’s good for them becauseit’s warm and sometimes wet， and sloths don’t move much.

許多不同的昆蟲(chóng)會(huì)住在樹(shù)懶的皮毛中。它們的皮毛很適合生存，因?yàn)檫@里溫暖且潮濕，而且樹(shù)懶不怎么活動(dòng)。

（英語(yǔ)原文選自：engoo.id）