英语翻译At night,bats fly through the air,catching hundreds of i

英语翻译
At night,bats fly through the air,catching hundreds of insects and other small animals.But during the day,they hardly move at all.Instead,bats pass the time hanging upside down from a secret spot.There are a couple of reasons why bats rest this way.First of all,it puts them in a position for takeoff.Unlike birds,bats can’t fly into the air from the ground.Their wings don’t produce enough lift to take off from a dead stop,and their hind legs are so small and underdeveloped that they can’t run to build up the necessary takeoff speed.Instead,they use their front claws to climb to a high spot,and then fall into flight.During the hours when most enemies are active,bats gather where few animals would think to look and most can’t reach.This allows them to disappear from the world until night comes again.There’s also little competition for these resting spots,as other flying animals don’t have the ability to hang upside down.Bats have a unique physiological adaptation that lets them hang around this way without using any energy.For you to hold your fist around an object tight,you contract（紧缩）several muscles in your arm,which are connected to your fingers by tendons（腱）；as one muscle contracts,it pulls a tendon,which pulls one of your fingers closed.A bat’s talons（爪）close in the same way,except that their tendons are connected only to the upper body,not to a muscle.To hang upside down,a bat pulls its claws open with other muscles.To get the talons to take hold of the surface,the bat simply lets its body relax.The weight of the upper body pulls down on the tendons connected to the talons,causing them to hold tight.Therefore,the bat doesn’t have to do anything to hang upside down.

在晚上,蝙蝠在空中飞行,捕获数以百计的昆虫和其他小动物.但在这一天,他们几乎在所有移动.相反,蝙蝠通过时间倒挂在一个秘密地点.有几个原因为什么蝙蝠的休息方式.首先,它把他们在一个位置,准备起飞.不同的鸟类,蝙蝠飞不进空气从地面.他们的翅膀不产生足够的升力来从一个完全停止,和他们的后腿,这么小,不发达,他们不能跑去建立必要的起飞速度.相反,他们用自己的前爪子爬到一个很高的地方,然后掉到飞行.期间的大部分敌人是活跃的,蝙蝠聚集的场所少的动物会想看最够不着.这使他们能够从这个世界上消失了,直到夜晚来临.也有小的竞争这些休息点,为其他飞行动物没有能力倒挂.蝙蝠有一个独特的生理适应,让他们挂在这条路不使用任何能源.你紧握拳头紧紧围绕一个对象,你的合同（紧缩）几个肌肉在你的手臂,这是连接到你的手指肌腱（腱）；作为一个肌肉收缩,它拉筋,拉你的手指头.一只蝙蝠的爪子（爪）近在同样的方式,但他们的肌腱只连接到身体上的,而不是一个肌肉.倒挂,一只蝙蝠把爪子开放与其他肌肉.把爪子抓住表面,蝙蝠只是让它的身体放松.重量的身体上拉下来的肌腱连接的魔爪,使他们牢牢抓住.因此,蝙蝠没有做任何事情,倒挂.