单词：pronephrium asperum
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At Jasper National Park, high in the Canadian Rockies, spring is a full, fragrant bloom: food is plentiful and new life emerges. But spring does not come easily, and for newborn youngsters dangers abound. Many must learn to run first and ask questio
国家地理2008年
Robert Glasper Talks 'ArtScience,' The Latest From His Adventurous Jazz Crew play pause stop mute unmute max volume 00:0006:26repeat repeat off Update Required To play the media you will need to either update your browser to a recent version or updat
2016年NPR美国国家公共电台9月
When Democratic presidential candidate Barack Obama was born to a white mother and a black father in 1961, marriage between blacks and whites was illegal in some parts of the United States. That's no longer the case, but as VOA's Susan Logue reports
VOA标准英语2008年（八月）
Today the U.S. government keeps an eye on health and safety in the workplace. But that wasn't always the case. Americans workers can thank a little-known factory worker for sparking the sweeping changes that now protect them on the job. Worker traged
VOA标准英语2011年(一月)
ADRIAN BARTOS, HOST: Hey, everyone. So this is our last show of Season 2, and as such, we need a little help from you, our audience. Please go to npr.org/podcastsurvey to take a quick survey about the show. It's going to help us learn more about our
2018年NPR美国国家公共电台11月
April 30th 1945Nazi Germany's dictator Aldof Hitler commits suicide during the last days of the World War II in Europe. Hitler and Eva Braun ,his long-time mistress and wife of one day, take their own lives as Soviet troops approaches bunker in Berli
历史上的今天-2010年