求翻译：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 liv是什么意思？

待解决 悬赏分：1 - 离问题结束还有