One of the problems with harvesting sunlight is that the sun's rays can be highly destructive to many materials. Sunlight leads to a gradual degradation of many systems developed to harness it.
太阳能技术面临的一个大问题在于，阳光对许多材料损害性很大，能让许多获取太阳能的系统缓慢失效。
Even many valuable materials like silver can be used to make chopsticks.
甚至许多贵重的材料，如银，都可以用来做筷子。
There are many varieties and grades of paper materials, and whilst it is fairly easy to spot the varieties, it is far more difficult to spot the grades.
纸张材料有许多品种和等级，虽然很容易分辨它们的种类，但要分辨它们的等级就困难得多了。
Trading was important, as so many raw materials, the semiprecious stones for the decoration of the temples, timbers for roofs, and all metals, had to be imported.
由于大量原材料，如用于装饰庙宇的半宝石石料、建造屋顶的木材和所有金属都需要进口，贸易变得至关重要。
This process, when repeated many times, could reduce your ability to learn new materials.
这个过程如果重复多次，就会降低你学习新材料的能力。
Cai Lun began experimenting with many different materials and different methods to turn those materials into paper.
蔡伦开始尝试许多不同的材料和不同的方法来把这些材料变成纸。
Many people are encouraged by Campbell's story and they give away free materials to him.
许多人被坎贝尔的故事所鼓舞，他们免费给他提供材料。
Confronted with a sink suddenly spurting water many homeowners have neither the knowledge nor the materials to make the repair themselves.
突然遇到水槽漏水，许多屋主自己无法修理，因为他们既没有这方面的知识也没有材料。
Many engineering disciplines rely on supercomputers to simulate complicated physical phenomena - how cracks form in building materials, for instance, or fluids flow through irregular channels.
许多工程学科都仰仗于超级计算机来模拟复杂的物理现象-比如建筑材质如何发生溃裂，或者液体流过不规则管道等。
In this article you've learned of many resources from which you can obtain free materials and tools to help improve your Web site.
在本文中，您了解了许多资源，可以从中获得免费资料和工具以改进您的网站。
It has been important to me that we retain and respect that history and the original features, many of which we have restored using British materials.
保留并尊重历史和原有的特色对我来说非常重要，我们运用了英国本土的原材料来重塑这些历史原貌。
For many materials the process of turning them back into useful raw materials is straightforward: metals are shredded into pieces, paper is reduced to pulp and glass is crushed into cullet.
对许多材料而言，将它们转变为有用的原始材料的过程是非常简单的：金属物被压碎成碎片，纸被融合为纸浆而玻璃制品则被碾成玻璃碎末。
Many aircraft parts are made from highly specialised metals and other materials: will there be enough of these to go around?
许多飞机零部件都由高度专业化金属和材料制成，我们不禁要问：撑得住吗？
However, library director Susan Craig said the library won't be changing the policy that allows residents to check out so many materials in the first place because thefts are rare.
然而，图书馆负责人苏珊·克雷格说，图书馆不会修改规章来禁止居民借这么多件资料，毕竟偷窃事件很少发生。
It has been important to me that we retain and respect that history and the original features, many of which we have restored using British materials. Christopher Bailey, Chief Creative officer.
保留并尊重历史和原有的特色对我来说非常重要，我们运用了英国本土的原材料来重塑这些历史原貌。
Many useful substances are now recovered from materials which used to be thrown away.
现在可以从过去往往被丢掉的东西中提取许多有用物质。
"We have many more choices of materials than we used to and many new approaches," he said.
“我们有比以前多得多的材料可供选择，以及许多新的方法，”他说。
As we know by now, the galaxy is teeming in worlds to exploit, and many in our cosmic neighborhood will contain similar materials to Earth.
正如我们现在所知道的，银河系充满着需要探索的世界，许多我们的宇宙邻居也拥有和地球相似的原料。
For many years researchers have been trying to develop a synthetic material with the same light-scattering properties as an opal, by etching patterns into various materials. That approach has failed.
多年来研究者们一直致力于开发一种与猫眼石一样有散射特性的合成材料，他们在各种各样的材料中蚀刻图案，但是都无功而返。
King inventors - Edison filament do in order to find the best materials have been done a 1000 experiment many times and failed.
发明家大王爱迪生为了寻找做灯丝的最好材料曾做了1000多次实验，并且都失败了。
They will offer many ways to master materials.
它们提供了许多精通事物的方法。
Most visitors bring a gift of materials for the village school, and many volunteer to give English lessons.
大多游客带了物质礼物送给村里的学校，许多志愿者在这里教英语。
And in an era when we're concerned about our carbon footprint, we can appreciate that lightweight plastics take less energy to produce and transport than many other materials.
在一个关注碳足迹的时代，我们能了解到轻塑料的制造和运输比起其他原材料耗费更少的能量。
Their products are exclusively produced in Italy as quality matters and incorporate many layers of different materials like plastic, silk and wool giving to them a unique sense.
为保证质量，他们的产品是在意大利生产的，并且加入像塑料、丝、羊毛不同材料，使得他们看起有一种独特的视觉。
Our initial user testing found that many IBC members preferred to print materials for offline viewing, such as conference agendas and session materials.
我们最初的用户测试表明，许多IBC成员喜欢把资料打印出来供离线查看，比如研讨会议程和会议资料。
Many of these "informal" industries take few precautions to protect workers from hazardous materials like lead and mercury in the waste.
这些“非正规”工业几乎不采取预防措施保护工人，防止垃圾中如铅和汞之类的有害物质。
Falling orders come as many companies face higher prices for raw materials, restricted access to credit and greater environmental compliance and Labour costs.
在订单持续减少之际，许多公司还面临原材料涨价、贷款难、环境合规成本及劳动力成本上涨等问题。
Falling orders come as many companies face higher prices for raw materials, restricted access to credit and greater environmental compliance and Labour costs.
在订单持续减少之际，许多公司还面临原材料涨价、贷款难、环境合规成本及劳动力成本上涨等问题。
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