1,900 years ago, Cai Lun improved the paper-making process.
1900年前，蔡伦改进了造纸工艺。
Paper-making was invented by the Chinese in the Western Han dynasty.
造纸术是中国人在西汉时期发明的。
Instead of cutting down trees, recycle used paper to meet the need of paper-making.
为了满足造纸需求，要回收利用废纸，而不是砍伐树木。
The improvement in paper-making spread zhi far and wide, and many different kinds of zhi were made by Chinese people.
造纸术的改进使纸广为传播，中国人还发明了许多不同种类的纸。
Bark may be used as raw material for paper-making.
树皮可以做造纸的原料。
She expects to announce plans for a fourth paper-making site there by the end of the year.
她希望在今年年底前宣布将在那里筹建第四座造纸厂。
Machine coated paper: paper coated on the paper-making machine. Also called On-machine coated paper.
机上涂布粉纸：在造纸机上加上粉剂涂层的纸。
But lignin becomes one of the main pollution sources, coming from waste water in the paper-making factory.
它是造纸厂排出的废液中的主要成分，是主要的水污染源之一。
The application of the system technology can be further extended to paper-making, sugar-refining and other production fields.
该系统应用还可以进一步推广到造纸、制糖等其他生产领域。
The technology of managing the pollution of black-liquor of straw pulping in paper-making is a hot point in China's water pollution controlling research.
草浆造纸黑液的污染治理技术是国内水污染控制研究的热点，但由于草浆黑液的特点不同于木浆造纸废水，因而其治理成本较大。
In paper making chitosan can be used as fortifier sizing agent retention and filtration aid surface modifier and flocculation agent for paper-making effluent.
在造纸方面，壳聚糖可用做纸张增强剂、施胶剂、助留助滤剂、表面改性剂和造纸废液的絮凝剂。
They observed that the clumps of roughage left behind by elephants ferrying tourists up to the fort bore a striking similarity to the raw fibre used in paper-making.
旅客可以乘坐大象前往这个港口，而二人注意到大象身后的大团粪便和造纸所用的纤维原料惊人地相似。
In paper making, chitosan can be used as fortifier, sizing agent, retention and filtration aid, surface modifier and flocculation agent for paper-making effluent.
在造纸方面，壳聚糖可用做纸张增强剂、施胶剂、助留助滤剂、表面改性剂和造纸废液的絮凝剂。
We can also save paper. Making paper needs many trees.
我们也可以节约纸张。造纸需要很多树木。
The movable type printing, the compass (指南针) , gun powder and the paper making are called four great inventions of China.
活字印刷术、指南针、火药和造纸术被称为中国四大发明。
First, the making of paper requires the loss of many millions of trees each year.
首先，造纸需要每年损失数百万棵树。
Many of these are very specialized, but the preponderance of paper making has been from soft wood and cotton or rags, with the bulk being wood-based.
其中许多都是非常专业的，但造纸的优势是用软木材和棉花或破布，大部分是以木材为基础。
There are a lot of materials which can be used for making paper, but the superiority ones are soft wood, cotton and rags.
可以用来造纸的材料很多，但以软木、棉布和碎布为优。
This factory provides toilet paper making machines.
这家工厂提供卫生纸制造机。
When we are making paper cuttings, we usually fold the red paper in half and then cut it with scissors.
当我们剪剪纸时，我们通常将红色的纸片折成两半，然后用剪刀剪。
What caught my attention first was paper cutting, that is, making images out of paper.
首先引起我注意的是剪纸，也就是用纸来制作图像。
On the daytime, we are going to have many creative and meaningful classes, such as robot-making and paper-cutting.
白天，我们会上很多有创意、有意义的课程，比如制作机器人和剪纸。
"Have you finished your lesson, George?" said Mr. Prentice to his son, who had laid aside his book and was busy making a large paper kite.
“你做完功课了吗，乔治？”普伦蒂塞先生对他的儿子说道。他的儿子早就放下了书，正忙着制作一个大的纸风筝。
Yangzhou paper cutting, with a history of 2,000 years, can be dated back to the Sui Dynasty, making Yangzhou one of the places where paper cutting first became popular.
扬州剪纸可追溯到隋朝，距今已有2000多年的历史，扬州是最早流行剪纸的地方之一。
The expected end result is a paper making a coherent argument that draws its supporting evidence or ideas from several books or journal articles.
而最终要达到的是，一篇论文有着前后呼应的论点，这些论点从很多书籍或刊物文章中得到论据与相关思想。
A couple of years ago, G. John Ikenberry of Princeton wrote a superb paper making the case for the centralized response.
普林斯顿大学的G.John Ikenberry在几年前曾就采取集中的措施应对全球化写过一篇精妙的文章。
Then dipping toy truck tires into red paint roll them along the paper making tire tracks.
然后将玩具卡车轮胎涂上红色颜料，这样当它碾过包装纸的时候就可以留下轮胎的痕迹。
Black liquor from Pulping and paper making industry, is one of the main industry pollutants in the environment.
制浆造纸工业的废水-黑液是造成环境污染的主要工业污染源之一。
Black liquor from Pulping and paper making industry, is one of the main industry pollutants in the environment.
制浆造纸工业的废水-黑液是造成环境污染的主要工业污染源之一。
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