scientists are trying to mack the deserts into good land again.they want to bring water to the deserts,so people can live and grow food.they are learning a lot about the desers.but more and more of the earth is becoming desrt all the time.scientists may not be able to change the deserts in time.why is more and more land becoming desert?scientists think that people make deserts.people are doing bad things to the earth.some placs on the earth don't get very much rain.but they still don't become deserts.this is because some green plants are gowing there.small green plants and grass are very important to dry places.plants don't let the hot sun make the earth even drier.plants don't let the wind blow the dirt away.when a little bit of rain falls, the plants the land can become desert much more easily.

科学家们正试图让沙漠重新变成良田。他们想把水引进沙漠，这样人们就能生活并种植粮食。他们对沙漠了解很多，但越来越多的土地正变成沙漠。科学家们不可能及时改变沙漠。为什么大量的土地会变成沙漠？科学家们认为是人类使之成为沙漠。人类做着不利于土地的事情。地球上一下地方得不到充足的雨水，但是还没有变成沙漠，那是因为那里种植了绿色植物。绿色植物和小草对干旱地区来说非常重要。植物能阻挡太阳使地面变得更干旱，能阻止大风把土壤吹跑。有几乎没有雨水时，土地就更容易变成沙漠。
有很多错误，1 mack 应是make 2.desers应是deserts 3. placs 应该是places,4 the plants the land 应去掉the plants