英語翻譯 急求高手翻譯 萬分感謝 我現(xiàn)在萬分焦急= =
Scientists are trying to make the deserts（沙漠） 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 deserts. But more and more of the earth is becoming deserts all the time. Scientists may not be able to change the deserts. People are doing bad things to the earth.
Some places on the earth don't get much rain. But they still don't become desert. This is because some green plants are growing there. Small green plants and grass are very helpful to dry places. Plants don't let the hot sun make the earth even drier. Plants don't let the wind blow the earth away. When a little bit of rain falls,the plants hold the water. Without the plants,the land can become a desert much more easily.