甲氧萘二甲戊酸

Though it was a bright, hot dawn outside, there were no windows in this part of the castle. Van Ritchten had to provide his own light in the form of a small lantern, which he gripped with a white- 1)

发表于:2018-11-28 / 阅读(152) / 评论(0) 分类 疯狂英语2002年

政府机构能够从开放源代码运动中学到什么?在本次激动人性的演讲中,白宫前CTO Beth Noveck 与我们分享了她对于开放运动的看法联系政府与民众,分享数据,创造一个真正人人参与的民主形式

发表于:2019-01-05 / 阅读(43) / 评论(0) 分类 TED公开课:群体的力量

STEVE EMBER: And Im Steve Ember with Explorations in VOA Special English. Today, we travel through city streets all over the world to explore street art, a popular and lively art movement. (MUSIC) BARBARA KLEIN: Street art can be found on buildings,

发表于:2019-01-11 / 阅读(49) / 评论(0) 分类 2011年VOA慢速英语(一)月

Feeling stressed and in need of a vacation? You are not alone but more than half of Americans do not take all their vacation days, even though they think they need a holiday more this year than last. And nearly a third of workers who do take a break

发表于:2019-02-03 / 阅读(116) / 评论(0) 分类 英语新闻

In The Hague, former Bosnian Serb leader Radovan Karadzic has resumed his own defense in his war crimes trial for what he called Serbias just and holy cause against Muslim aggression during the war in Bosnia in the 1990s. But nearly 20 years after it

发表于:2019-02-05 / 阅读(57) / 评论(0) 分类 VOA标准英语2010年(三月)

An astronomer used to walk out every night to gaze upon the stars.It happened one night that,as he was wandering in the outskirts of the city,with his whole thoughts rapt up in the skies,he fell into a well.On his holloaing and calling out,

发表于:2019-02-17 / 阅读(123) / 评论(0) 分类 趣味英语