The information about camel characteristics is 200 words.

Camel body hair is generally brown, but also light yellow, gray and other color types; There are tufts of hair on the top of the head, and the body hair is fluffy and long; The hump is fat and plump, and there is still a thick hair after depilation in summer; The limbs are thick and the hooves are wide and flat. There are two kinds of bactrian camels and dromedary camels. Bactrian camels are widely domesticated in northern China and can still be seen in Inner Mongolia and Northwest China. For a long time in the past, it was the main means of transport for trade between foreign countries and Beijing, and it was called "the boat of Beijing". Some people think that dromedaries used to be distributed in Xinjiang, but now they are only distributed in Arabia, India and North Africa. Its body hair is very short and its life span can reach 50 years. Camels have water sacs in their stomachs, which can store a lot of water. Camel's two high humps can store 100 kilograms of fat, which can be converted into water and energy when necessary to maintain camel's life activities. So in the desert, you can go without eating or drinking for 30 to 40 days in a row, which is suitable for a long journey. Domestic camels have become the main means of transportation for human beings in the desert. Because the camel will stretch out its left or right front and rear legs when walking or running, people will feel very unstable when riding on it. Camels are the means of transportation in desert areas. There are bactrian camels and dromedaries in the world. The most obvious difference between them is the different number of humps. There are two humps like saddles on the humpback of my family. Most of the camels we usually see are domestic camels. Their ancestors were wild camels and lived in desert areas such as Xinjiang, Gansu, Qinghai and Inner Mongolia. Their differences from domestic camels are: short hump, slender legs, short hair and yellow color. Because the number of wild camels is very rare, they have been listed as the first-class protected animals in China. When they travel long distances in the desert, they are often hungry and thirsty. At this time, the fat on the hump will decompose and supply the camel with nutrients and water. Camels are thirsty in the desert where water is scarce, because they usually drink less water, and they can drink more than 100 liters of water in10 minute. At the same time, it drains less water, and only discharges about one liter of urine a day in summer, so it is not easy to open its mouth to prevent the water in the body from going out, so in the summer desert, it can not drink water for 8 days and will not die. Camel is good at walking in the desert, because it has two pairs of peculiar soles, and there is a generous spring-shaped meat pad under the soles. When walking, the toes are spread apart in front, so that it will not get stuck in the sandpit when walking on the sand surface. When traveling, it holds its head high and its eyes will not be burned by the high heat reflected by the sun on the ground. Camel's long eyes, nose that can automatically open and close, and ears covered with thick hair can protect it from sandstorms ... As early as the Western Han Dynasty more than 2,000 years ago, our people used camels as a means of transportation to the western regions.