单词:high density concrete
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STEVE EMBER: Im Steve Ember. SHIRLEY GRIFFITH: And Im Shirley Griffith with EXPLORATIONS in VOA Special English. Today we tell about Hoover Dam. It was the largest and most difficult structure of its kind ever built when work started in nineteen thir
Katy Perry《Wide Awake》 I'm wide awake I'm wide awake I'm wide awake Yeah I was in the dark I was falling hard With an open heart I'm wide awake How did I read the stars so wrong I'm wide awake And now it's clear to me That everything you see Ain'
By Ben Gilbert Baghdad 11 January 2006 An Iraqi mason works on a wall surrounding a new school on the outskirts of Basra (file picture) Iraq has been hit with a construction boom - in no small part du
This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. Weve heard that a mothers weight during pregnancy can influence the weight of her offspring. Now a study of rats shows that the fat content in a moms d
1. Iran is threatening to withdraw from the Nuclear Non-proliferation Treaty if the United States does not stop pressuring that country to end its nuclear program. The U.S. says it will go to the Unit
The World Health Organization (WHO) is calling for action to fight all forms of malnutrition(营养不良), including under-nutrition and obesity, which affect hundreds of millions of people worldwide. More than 60 world nutrition(营养) experts
Turning Cigarette Butts to Batteries 烟头转变成电池 If you see a person carelessly throw a cigarette to the ground, what are you likely to think? That depends. If you hate people throwing things on the ground, you might think, That person shou
Hi my name is Jason Cornwell . I'm user experience designer at Gmail. We have been hardworked to update Gmail with a new look.I'm excited to share with you some of the biggest improvements. 大家好 我是Gmail的用户体验设计师Jason Carmel。经
中国房价涨疯了,美国呢?要在纽约、旧金山这样的一线城市,$2500美金租一房一厅!今天节目,带你了解美国人买房、租房的烦恼。 关键词: 先搞清一个概念:房子是House 还是Apartment? Ho