The elephants' mothers left them alone.

大象的母亲把它们单独留下。

The keepers have to sleep with the elephants.

饲养员必须和大象一起睡觉。

The native environment of the elephants is the forest.

大象的原生环境是森林。

The keepers have to feed the elephants every four hours.

饲养员必须每四小时喂一次大象。

We saw the elephants from close up, which was a beautiful sight.

我们近距离看到了大象，那是一幅美丽的景象。

Children love going to the zoo to see the elephants.

孩子们喜欢去动物园看大象。

The zookeeper explained the habits of the elephants to the visitors.

动物园管理员向游客解释了大象的习性。

On the other hand, the land which the elephants lived on was overused by humans.

另一方面，大象生活的土地被人类过度使用。

On the one hand, the elephants' main lake, their only water source (来源), dried up.

一方面，大象们唯一的水源——主湖枯竭了。

What are the elephants doing?

那些大象在干什么？