会员:密码:注册会员忘记密码?网站帮助我浏览过的资料
设为首页加入收藏夹加入QQ书签论坛
首页每天学英语新概念走遍美国音标词汇语法研究生大学中学小学演讲考试听力有声圣经VOA儿童商务

您所在的位置: 大耳朵首页 > 听力资料 > 在线视听资料 >...> 2005年VOA慢速英语 > 8月份 > 正文

站内搜索:

大耳朵背单词,让我们时刻进步:
first/[fə:st]/num.第一
2005年VOA慢速英语special200508150041
DEVELOPMENT REPORT - Bringing Color to Life With Natural DyesBy Jill Moss

Broadcast: Monday, August 15, 2005

I'm Barbara Klein with the VOA Special English Development Report.

Dye can bring a little color to life. Most clothing is colored with dyes. Modern, manufactured dyes can be costly. Natural dyes from plant and animal products have been used since ancient times. So this week, we describe a natural way to dye wool.

The advice comes from information written by Jenny Dean of the Intermediate Technology Development Group. This anti-poverty group in Britain has a new name, Practical Action.

There are several methods to put dye onto material. The vat method, for example, can be used to dye wool with onionskins. For this example, use one hundred grams of natural wool. The wool must be clean. Leave it overnight in water and liquid soap. Then wash it with clean water that is a little warm. Gently squeeze out the extra water.

A solution called a mordant is used in the dying process. A mordant helps fix the dye to the material. Traditionally, mordants were found in nature. Wood ash is one example. But chemical mordants such as alum are popular today. Alum is sold in many stores. It is often mixed with cream of tartar, a fine powder commonly used in cooking.

Mix eight grams of alum with seven grams of cream of tartar in a small amount of hot water. Add the solution to a metal pan of cool water. Next, add the wool and place the mixture over heat. Slowly bring the liquid to eighty-two degrees Celsius. Heat the mixture for forty-five minutes. After it cools, remove the wool and wash it.

To prepare the dye solution, cover thirty grams of onionskins with water. Use only the dry, brown outer skins. Boil the liquid until the onionskins lose their color, about forty-five minutes,. Remove the skins after the dye cools.

Now it is time to dye the wool. Place the wool into the dye and heat the mixture. Bring it to a boil, then immediately reduce the heat to eighty-two degrees. Now heat the dye for about forty-five minutes or until the wool is the desired color. Wool looks darker when it is wet. Once the dye cools, remove the wool and wash it. Now the wool is orange or yellow. Or at least it should be.

Internet users can get the full details at the Web site of the group Practical Action. The address is itdg-org. Again, it's itdg.org. We will have a link with this report at www.unsv.com.

This VOA Special English Development Report was written by Jill Moss. I'm Barbara Klein.
共有0人向本资料提供了听力原文,其中被采用了0篇,当前有0篇待审批,有0篇未被采用! 查看明细>>
如果您有更好的听力原文,欢迎提供给大耳朵,如果被采用,您将获得20到100金币的奖励!
Google  热门:英语培训学校英语口语英语翻译英语学习
已有0位对此听力感兴趣的网友发表了看法
非常好 很好 一般 不好 很差
* 如果因您不良评论或重复评论导致评论被删,您将会被扣掉一定数额的金币。
* 您必须遵守《全国人大常委会关于维护互联网安全的决定》及中华人民共和国其他有关法律法规。
* 承担一切因您的行为而直接或间接导致的民事或刑事法律责任。
* 您发表的文章仅代表个人观点,与大耳朵网站无关。
* 大耳朵评论管理人员有权保留或删除其管辖评论中的任意内容。
* 您在大耳朵网评论系统发表的作品,大耳朵网有权在网站内转载或引用。
* 参与本评论即表明您已经阅读并接受上述条款。
8月份
高瞻远瞩
放眼全球
Google
热门:英语培训学校 英语口语 英语翻译 英语学习
图片新闻更多
推荐资源
经典学习方法更多>>
听力资料目录导航
听力测试 英语词汇 英语口语 考试英语 品牌英语 大学教材 其他教材 商务英语 广播英语 儿童英语
历年中考听力
初中中考模拟
历年高考听力
高考听力模拟
历年四级听力
历年六级听力
四级听力模拟
小学  初中
高中  四级
六级  考研
托福  GRE
星火记忆单词
用Mp3背单词
刘毅词汇记忆
情景英语口语
4+1听力口语
出国实用会话
英语口语8000句
新东方900句
美语听力与发音
ABC到流利口语
口译考试
剑桥考试
中高考考试
大学四六级考试
研究生考试
公共英语考试
英语专业考试
新概念 六人行
赖世雄 许国璋
走遍美国 越狱
疯狂英语 沛沛
语法讲座 动感
大山英语 探索
千万别学英语
大学英语听力
大学英语精读
全新版 21世纪
新视野 实用综
大学体验 新编
成人自考 step
Listen this way
广州版小学英语
广州版初中英语
剑桥少儿英语
朗文3L看听学
Goforit新目标
高中英语课本
进阶听说教程
商务英语300句
VOA商务英语
商业英语视频
中级商务英语
初级剑桥证书
新编剑桥英语
剑桥英语精华版
2007年VOA慢速
VOA中级美语
美国习惯用语
VOA流行美语
澳广播英语讲座
在线大学课堂
VOA视频节目
宝宝ABC
棒棒英语
哈哈美语
LittleFox儿歌
英语儿童故事
380英语小故事
1035个英语单词
updated Fri Jul 25, 2008
免责声明:本站只提供资源播放平台,如果站内部分资源侵犯您的权益,请您告知,站长会立即处理。
Copyright © 2003-2008 大耳朵英语  鲁ICP备05010808号