单词：reaggregates
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Researchers: Recycled Concrete's Time Has Come SOUTH BEND, INDIANA Recycling in the construction industry has become big business. It's easy to find new life for everything from old windows to wood beams. But until now, concrete the most widely used
VOA标准英语2016年(八月)
Snow 雪 Snow comes from clouds, and it is made of snowflakes. 雪从云里来，它是由雪片形成的。 As snowflakes grow bigger and heavier in the cloud, they fall toward the ground. 当云中的雪片变得更大、更重时，它们就会落向
与美国小学生一起学英文第1册
Here's the key part. 接下来是关键的部分。 The solution nearest the wall spins faster than the solution closer to the middle. 离试管壁最近的溶液，要比中间的溶液旋转得更快。 That difference in velocity creates sheer str
TED演讲教育篇
Textalyzer Aims at Deadly Distracted Driving 能够测试驾驶时是否分心的神器 Fifty years ago, British inventors made and marketed the first electronic breathalyzer. The alcohol gauge has become standard issue for U.S. law enforcement crack
2017年Scientific American(八)月
新gre作文写作考察考生完成题目过程中是否能够融合批判性思维和分析写作能力，以下是gre考试写作部分issue的优秀写作实例，通过这些优秀范文或是习作，考生可以借鉴里面的短语、句子或思
GRE作文
Oregon Advertising Studio Tracks Fukushima Radiation If you were to picture the sort of person who might take the lead in gathering radiation data from the Fukushima nuclear accident, Marcelino Alvarez probably wouldn't come to mind. My background is
VOA标准英语2011年(七月)
Of all the plastic produced since the 1950s, less than 10% has been recycled. 20世纪50年代以来，产生的所有塑料中，只有不到10%得到回收。 The vast majority ends up being dumped, most of it in landfill. 其中大部分都成了垃
经济学人科技系列
Cameras were flashing at this recent Constellations concert in Atlanta. And the morning after, fans who wanted to see what has everybody else got, could go to a new website thats helping to hit the right note. It is called Recreate Mynight and it con
英语杂谈
By Birungi Machrine Kampala 19 February 2008 A documentary has been released that depicts child labor in Uganda. The film, called Stone Cold is by local writer Michael Wawuya. It explores the causes and costs of child labor in a typical village. Voic
VOA常速英语2008年（二月）
Let's begin by looking at what we currently understand about the neuroscience of Alzheimer's. 让我们先看看目前神经学上对老年痴呆的了解。 Here's a picture of two neurons connecting. 这是一张两个神经元连接的图。 The p
TED演讲国际问题篇
Marine Mammals Since there is such an abundance of food in the sea,it is understandable that some of the efficient, highly adaptable, warm-blooded mammals that evolved on land should have returned to the sea.Those that did have flourished. Within abo
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