慢速VOA081115

天热染料:将色彩注入生活 (1)
Bringing Color to Life With Natural Dyes (1/2)
听于:08-11-15    用时:29:02
正确率:83% (+16分)    错词:30个

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

The advice comes from Information reckoned information written by Jenny Dean of the intervidioer Techonology Intermediate Technology Development Group in Britain. This anti-powerty anti-poverty group is now called practical actionPractical Action.

There are several methods to put dye onto material:the wap material. The vat method, for example, can be used to dye wool with onionskins. For this exampleused , use 100 grams of natural wool. The wool must be clean, lithered over night . Leave it overnight in water and liquid soap, then . Then wash it with clean water that is a little warm, gently . Gently squeeze out the extra water.

A solution called a modernt mordant is used in the dying dyeing process. A MO help fixed mordant helps fix the dye to the material. Traditionaly modens Traditionally, mordants were found in nature, wood . Wood ash is one 1 example. But chemical moderns mordants such as allum alum are popular today. Alum is sold in many stores, it . It is often mixed with cream of chartertartar, a fine porter powder commonly used in cooking.

听写笔记:
mordant dye 媒染料
ancient 
manufacture 
describe 
intermediate 
anti-poverty 
overnight 
alum明矾,矾
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