题目

英语翻译
There are some places in the world where great cities once stood.There were gardens,trees and grass.But now these cities have gone and the places are like deserts.Scientists began to study this land to find out what had happened.Many of them believed the land died when the trees were cut down.
Trees help other plants grow and help hold the soil in place.They keep the soil from blowing away.The leaves of trees on the ground keep rainwater from running off.Trees near farms protect growing plants from strong winds.
Once there were hundreds of farms in the Southwestern United States.Then the farms turned into fields of dry dust (尘土).Trees might have saved these farms.But few trees grow in the dry Southwest now.
Now we try to save trees.In many places,when a tree is cut down,a new tree is planted in its place.We do not want the land to die.

提问时间：2021-03-31

答案

这个世界上有很多地方曾经矗立着伟大的城市,有着花园、树木和草丛.但是现在这些城市都消失了,这些地方如今变成了沙漠.科学家开始研究这些土地希望可以发现在这里发生过什么事情.大部分科学家认为土地是在树木被砍伐...