Whhy do camels have humps? 骆驼为什么长驴峰?

Camels keep fat in their humps. In the desert.there is not a lot of food. Camels use the fat in theirhumps for food， so they can survive for a long timewithout eating. As camels use the fat， their humps getsmaller.

In Egypt， camels have been used for long trips forover 3，000 years. It is really a long time！

中文大意

駱驼的驼峰里储藏着脂肪。在沙漠中没有充足的食物，骆驼就消耗驼峰里储藏的脂肪充当食物。这样，就算很长时间不吃东西，骆驼也不会饿死。当骆驼使用驼峰中的脂肪时，驼峰就会变得越来越小。

3000多年来，埃及人一直把骆驼当做长途旅行的交通工具。这真是有很长时间了。