[化] 亚氰铁化亚铁

Storing Drinking Water

Broadcast: August 4, 2003 This is Bill White with the VOA Special English Development Report. Safe drinking water has always been rare and valuable. Throughout the world, drinking water has to be stor

发表于:2018-11-27 / 阅读(516) / 评论(0)

VOA2003（下）-发展与科学

Recycling Scrap Metal

By Gary Garriott Broadcast: November 3, 2003 This is Steve Ember with the VOA Special English Development Report. People have been recycling metals for hundreds of years. Today, re-using metal waste o

发表于:2018-12-01 / 阅读(171) / 评论(0)

VOA2003（下）-发展与科学

用Mp3背六级单词015

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发表于:2018-12-01 / 阅读(94) / 评论(0)

用Mp3背六级单词

VOA慢速英语20060731a

DEVELOPMENT REPORT - Recycling Scrap Metal Into MoneyBy Gary Garriott Broadcast: Monday, July 31, 2006 This is the VOA Special English Development Report. People have been recycling metals for hundred

发表于:2019-01-02 / 阅读(54) / 评论(0)

2006年慢速英语（七）月

VOA标准英语2010年-Iron-Regulating Protein Could Help Bat

Almost all cells need iron to grow. Now, researchers have identified a link between the body's system for regulating iron and breast cancer. The discovery could help doctors predict the course of breast cancer disease and even help them decide the mo

发表于:2019-01-13 / 阅读(185) / 评论(0)

VOA标准英语2010年(八)月

DEVELOPMENT REPORT - Reusing Metal Waste Provides Work For M

DEVELOPMENT REPORT - Reusing Metal Waste Provides Work For Many in Developing Countries By Gary Garriott Broadcast: Monday, April 04, 2005 I'm Gwen Outen with the VOA Special English Development Repor

发表于:2019-01-30 / 阅读(51) / 评论(0)

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.dcu

advance contribution

Air America

air-permeable property