Modern zoos are very different from

Modern zoos are very different from zoos that were built fifty years ago. At that time, zoos were places 1 people could go to see animals from many parts of the world. The animals lived in cages that were made 2 concrete with iron bars, cages that were easy to keep clean.
Unfortunately for the animals, the cages were small and impossible to hide in. The zoo environment was anything but natural. 3 the zoo keepers took good care of the animals and fed them well, many of the animals did not thrive; they behaved in strange ways, and they often became ill.
In modern zoos, people can see animals in more natural habitats. The animals are given more 4 in large areas so that they can live more comfortably as they would in nature. Even the appearance of zoos has changed. Trees and grass grow in the cages, and streams of water flow 5 the areas that animals live in.

結果 (中文) 1:

现代动物园有别五十多年前建造的动物园。在那个时候，动物园是地方 1 人可能去看动物从世界许多地区。动物生活在笼子里进行 2 混凝土用铁棒，笼子，是易于保持清洁。不幸的是动物笼子很小，不可能把自己隐藏在。动物园环境是不自然的。3 动物园的饲养员们爱护动物，给他们好，许多动物确实不兴旺起来;他们的行为以奇怪的方式，和他们经常生病。在现代的动物园里，人们可以看到更多自然栖息地的动物。所以，他们可以住得舒适，因为他们将在自然更多 4 大领域给动物。甚至出现动物园，改变了。树和草生长在笼子里，水流 5 流动物生活在的领域。

結果 (中文) 3:

现代动物园与五十年前建造的动物园有很大的不同。在那个时候，动物园里有1个人可以去看动物从世界许多地方。动物生活在笼子里，用铁条制成2个混凝土，保持干净的笼子。不幸的是，动物，笼子是小的，不可能隐藏在。动物园的环境是什么，但自然。3动物园的饲养者照顾好动物，喂养它们好，许多动物没有兴旺；他们表现在奇怪的方式，他们经常生病。在现代动物园里，人们可以看到更多的自然栖息地的动物。动物在大面积上有更多的4，这样他们就可以更舒服地生活在大自然中了。甚至动物园的外观也改变了。树和草在笼子里生长，水流5个动物生活的区域。