英语翻译Imagine a classroom missing the one thing that has long

英语翻译
Imagine a classroom missing the one thing that has long been considered a necessary part to reading and writing:paper.No notebooks,no textbooks,no test paper.And there are no pencils or pens,which,after all,always seem to run out of ink at the critical moment.
A “paperless classroom” is what more and more schools are trying to achieve.Students don’t do any handwriting in this class.Instead,they use palm-sized (手掌大小的,掌上的),or specially-designed computers.The teacher downloads（下载）texts from Internet libraries and sends them to every student’s personal computer.
Having computers also means that students can search the Web.They can look up information on any subject they’re studying,from math to social science.
And exams can go online,too.At a school in Tennessee,U.S.A.,students take tests on their own computers.The teacher records the grades on the network for everyone to see and then copies them into his or her own electronic grade book.
A paperless classroom is a big step towards reducing the waste of paper.The school teacher,Stephanie Sorrell in Kentucky,U.S.A.,said she used to give about 900 pieces of paper each week to the students.“Think about the money and trees we could save with the computers,” she said.
But,with all this technology,there’s always the risk that the machines will break down.So,in case of a power failure or technical problem,paper textbooks are still widely available for these hi-tech students.

想象一下一间少了一样东西的教室,这样东西长久以来都被认为对于阅读和写作来说是必不可少的一部分：纸.没有笔记本、没有教科书,也没有试卷.而且,也没有铅笔、钢笔,毕竟,钢笔这东西总是会在某个关键时刻耗尽墨水.
“无纸教室”,这正是越来越多的学校所要努力实现的.学生们无须再做什么课堂笔记.取而代之的是：他们使用掌上或曰专门设计的电脑.教师从互联网上把教科书下载下来,然后把它们传送到所有学生的个人电脑上.

有了计算机,也就意味着：学生可以搜索网络.学生可以查找与他们正在研究的任何一个主题相关的信息,从数学到社会科学.
就是考试也可以网上进行.在美国田纳西州的一所学校,学生们在他们自己的电脑上答试卷.教师为每个人把成绩登记在网上阅览,然后把它们拷贝到他或她自己的电子成绩册里.

无纸教室,是减少纸张浪费方面的一个大进步.美国肯塔基州的学校教师斯塔芬尼·索瑞尔（Stephanie Sorrell ）说：以往,她每周要给学生分发大约900张纸.她说：“想到（花费的）这些钱和树木,我们用计算机就可以节省了.”不过,虽然有这一技术,也总是有机器会出故障的风险.所以,在停电或有技术问题的情况下,对这些（掌握）高技术的学生来说,纸质教科书依然是广泛适用的.