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英语翻译Most animals have little connection with animals of a di

来源:学生作业帮 编辑:作业帮 分类:英语作业 时间:2024/11/07 21:40:06
英语翻译
Most animals have little connection with animals of a different kind,unless they hunt them for food.Sometimes,however,two kinds of animals come together in a partnership(伙伴关系)which does good to both of them.You may have noticed some birds sitting on the backs of sheep.This is not because they want a ride,but because they find easy food in the parasites (寄生虫)on sheep.The sheep allow the birds to do so because they remove the cause of discomfort.So although they can manage without each other,they do better together.
Sometimes an animal has a plant partner.The relationship develops until the two partners cannot manage without each other.This is so in the corals(珊瑚)of the sea.In their skins they have tiny plants which act as"dustman",taking some of the waste products from the corals and giving in return oxygen which the animal needs to breathe.Ifthe plants are killed,or are even prevented from light so that they cannot live normally,the corals will die.
大部分不同种类的动物彼此之间都没有关系,除非为捕食关系.然而,有时,两种动物伴生在一起是对双方都有益的.你也许已经注意到一些鸟类站在羊背上.这绝不是因为他们想骑乘,而是因为在羊身上更容易找到寄生虫之类的食物.羊允许鸟这样做因为它们可以清除自身不适的根源.所以尽管它们彼此毫无瓜葛,却可以和睦共处,互惠互利.
有时某种动物会与某种植物有这种伴生关系.这种关系会因为彼此双方失去对方就无法生存而不断发展.海里的珊瑚就是这样的.在它们的皮肤上有一种极为细小的植物,这种植物扮演着“清洁工人”的角色,可以清除珊瑚的排泄物,作为回报,释放出动物呼吸所需要的氧气.如果植物死了,或者因接触不到光线导致无法其正常生存,珊瑚也就死了.