帮我讲一下这篇阅读理解主旨大意每短的大意Modernzoosareverydifferentfromzoosthatwerebuiltfiftyyearsago.Atthattime,zooswereplaceswherepeoplecouldgotoseeanimalsfrommanypartsoftheworld.Theanimalslived

Question

帮我讲一下这篇阅读理解 主旨大意 每短的大意
Modern zoos are very different from zoos that were built fifty years ago.At that time,zoos were places where people could go to see animals from many parts of the world.The animals lived in cages that were made of concrete (混凝土) with iron bars,cages that were easy to keep clean.Unfortunately for animals,the cages were small and impossible to hide in.The zoo environment was anything but natural.Although the zoo keepers took good care of the animals and fed them well,many of the animals did not thrive (茁壮成长) ; They behaved in strange ways,and they often became ill.
In modern zoos,people can see animals in more natural habitats (家园).The animal was given more freedom in large areas so that they can live as they would in nature.Even the appearance of zoos has changed.Trees and grass grow in the cages,and streams of water flow through the areas that the animals live in.There are few bars; there is often only a deep ditch (沟渠),filled with water,surrounding an area where several species of animals live together as they would naturally.
Animals often become ill in the past because:

Answer 1

翻译大意：
现代的动物园与五十年前的动物园有着非常大的区别.那时候,动物园只是一个让人去参观来自世界各地的动物的地方.动物生活在由铁条和混凝土制造而成、容易清洁的笼子里.不幸的是,笼子很小,动物几乎无法容身.园内的环境缺少自然.虽然动物园的管理员把动物们照顾喂养得很好,但是很多动物都无法茁壮成长；它们行为怪异,经常生病.
在现代的动物园,人们则可以看到动物生活在更加贴近自然的家园里.它们在更大的生活空间里有了更多的自由,就像生活在大自然中一样.即使是动物园的环境也发生了转变：笼子里种了树木和草坪,还有一溪清流穿过动物的居住地；铁栅栏减少了；只有一条很深的水渠,把几种动物环绕在一起,让他们自然相处.
（最后一句应该是提问.回答：The cages where the animals live were small and impossible to hide in.The zoo environment was anything but natural.）