题目

英语翻译
很久以前,这个世界的环境很好,有很多树木.它们可以释放出氧气和吸入二氧化碳.但自从人类出现了,树木的数量日渐减少.因为人们的生活需要很多木材,所以他们不断地砍树木.日子久了,很多森林都消失了.从而又造成了水土流失.肥沃的土地变成了沙漠.世界上很多国家都有着饮水困难的危机.而且城市里常常会有沙尘暴来袭.人们的生活受到严重的威胁.而其他生物又受到了威胁.

提问时间：2020-08-01

答案

Long ago,the world's environment is very good,there are many trees.They can release oxygen and carbon dioxide inhalation.But since humans appeared,the number of trees are dwindling.Because people's living needs a lot of wood,so they cut down trees ceaselessly.Time for a long time,many forests have disappeared.Thus caused soil erosion.The fertile land into the desert.Many countries of the world have water crisis of difficulty.And the cities are often sandstorms hit.The life of people are a serious threat.While the other creatures and threatened.