单词：electric-steel
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Electric Fish 发电鱼 One way that Harold Zakon and his team find fish to study is to put electrical detectors into the bottom of murky streams in Venezuela. This works because certain fish emit pulses of electricity. Discover electric fish -- on tod
(科普英语)Earth and Sky
By Caty Weaver Broadcast: November 21, 2003 This is Bob Doughty with the VOA Special English Economics Report. Last week, the World Trade Organization ruled that United States taxes on imports of stee
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在一个伦敦那么大的城市里，每天都要消耗掉三千万吨粮食。但是，这些食物都从何而来？建筑师Carolyn Steel 探讨每天喂养一个城市的神话，介绍古代的食物运输如何影响城市的形成和发展。
TED公开课:吃吧
STEVE INSKEEP, HOST: President Trump's push for tariffs on steel and aluminum imports is driven in part by competition from China. The United States still produces most of its own steel, we should be clear. But the industry has faced pressure from ch
2018年NPR美国国家公共电台3月
BEIJING, Aug. 19 (Xinhua) -- China's steel output growth slowed in July and prices of steel products have continued to drop, according to data from the National Development and Reform Commission (NDRC). Crude steel production gained 4.2 percent year
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托福听力历史类文章关键要素!本期屌丝听力继续接着上期的内容讲，谈论不同文章类型的把握要点。上期我们讲了TPO中最常考的生物类文章的五点关键要素，本期我们要涉及TPO中最Versatile的文
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