英语翻译(002) In 1620,about half the USA was covered（覆盖） by fore

英语翻译
(002) In 1620,about half the USA was covered（覆盖） by forests． Today the forests have almost gone． A lot of good land has gone with them,leaving only sand（沙地）． China doesn't want to copy（抄） the USA's example． We're planting more and more trees． We've built the " Great Green Wall" of trees across northern（北部的） part of our country．The Great Green Wall is 7,000 kilometres long,and between 400 and 1,700 kilometres wide． It will stop the wind from blowing the earth away． It will stop the sand from moving towards the rich farmland（农田） in the south． More "Great Green Walls" are needed． Trees must be grown all over the world． Great Green Walls will make the world better．
004 A friend of mine named Paul received（收到） an expensive car from his brother as a Christmas present．On Christmas Eve when Paul came out of his office,a street urchin(顽童) was walking around the shining car．“Is this your car,Paul?”he asked． Paul answered,“Yes,my brother gave it to me for Christmas．”The boy was surprised（惊奇）．“You mean your brother gave it to you and it didn’t cost you anything?Boy,I wish…”He hesitated(犹豫)．
Of course,Paul knew what he was going to wish for（希望）．He was going to wish he had a brother like that.But what the boy said surprised Paul greatly.
“I wish,”the boy went on,“that I could be a brother like that．”Paul looked at the boy in surprise,then he said again,“Would you like to take a ride in my car?”
以上紧急求翻译,

1620年,美国大约一半面积被森林所覆盖.今日这些森林几乎都消失了.许多优质土地也流失了,只剩下沙地.中国不想走美国的老路,我们正在加大力量植树.在我国北部地区我们种植了“绿色长城”.它长达7000公里,宽度从400到1700公里不等.它能阻止风侵蚀土壤.防止沙漠向南方肥沃的农田蔓延.我们需要更多的“绿色长城”.全世界应该种遍绿树.绿色长城将使世界更美好.
“cool”是一个有很多意思的词.以前的原意是表达温度稍有点冷,随着世界的变化,这个词有了许多不同的含义.
它可以用来表示对几乎所有东西都感兴趣的一种感觉.
当你在街上看到一辆名车,你可能就会说：“真酷啊”.当你看到你最喜欢的足球明星,你可能会认为“他好酷”.
我们都在扩大“cool”这个词的含义.你可以用它来代替许多其他表示“新的”或“惊讶的”的词.通过一个很有趣的故事我们可以来看看这个词的用法.一个老师让学生来写个关于他们刚去游览过的瀑布的作文,一个学生就写了一句话：它太酷了!可能他觉得这是他表达他所见所感的最好方法.
但是这个故事也体现出了一种词汇的匮乏.没有“cool”这个词,许多人可能想不出话来表达同样的意思.所以保持一些可信度是很重要的,你能想出其他的词让你的人生像“cool”这个词这样变得丰富多彩么?我能.并且我想那些词也很酷.
我的一个叫paul的朋友收到一辆他兄弟送的很贵的车作为圣诞礼物.圣诞夜的时候,paul从他的办公室走出来,街边一个小孩绕着那辆亮闪闪的车走,“Paul,这是你的车么?”他问道.Paul说,“没错,我兄弟送我的圣诞礼物.”那个小孩很惊讶,“你的意思是你兄弟送给你的,不要钱?哦,兄弟,我多想.”他犹豫道.
当然,paul 知道他接下去想说他多想干嘛.他多想也有个一样的兄弟.但是这个孩子说的话让Paul大吃一惊：“我多想.”那个小孩接下去说“我能够像你兄弟一样”.Paul惊讶地看着那个小孩,然后他又说了一遍：“你想搭个顺风车么?”
翻得真累,这是作业么?