黑鳞富铁钠石

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

英语听力：探索发现科学新发现：我们的大气层-25

One day these manned space missions may reach out even further to distant planets with alien atmospheres, atmospheres that may support their own life forms. Else where in our universe on distant planets, alien air may support extraterrestrial life. J

发表于:2018-12-03 / 阅读(34) / 评论(0)

探索与发现2014年

DEVELOPMENT REPORT - Storing Drinking Water

DEVELOPMENT REPORT – January 7, 2002: Storing Drinking Water By Gary Garriott This is the VOA Special English Development Report. Safe drinking water has always been rare and valuable. Throughout th

发表于:2019-01-07 / 阅读(200) / 评论(0)

农业与发展

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

Copenhagen WTA 2012 tennis tournament opens

COPENHAGEN, April 7 (Xinhua) -- The Copenhagen WTA tennis tournament, a 220,000 U.S. dollar outdoor hardcourt event, opened at the Farum Arena here Saturday. The international event features 24 players, including world number six women's tennis playe

发表于:2019-02-06 / 阅读(52) / 评论(0)

英语新闻

万物简史第506期:丰富多彩的生命(2)

Back here are specimens collected by Joseph Banks in Australia, 这里放着约瑟夫班克斯在澳大利亚采集的标本， Alexander von Humboldt in Amazonia, Darwin on the Beagle voyage, and much else that is either very rare or historically im

发表于:2019-02-13 / 阅读(41) / 评论(0)

万物简史

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学英语单词

arachnoid granulations

audit of non-operating expenses