单词：carvotanacetone
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Both my brother and I are outgoing people. He as well as I likes being in the sun. It goes without saying, therefore, that we spend a lot of our free time at the beach. We go there to relax as well as
赖世雄中级美国英语
Simple New Test Detects Early Signs of Diabetes 新型简单测试或能检测出糖尿病早期迹象 People with Type 1 diabetes, usually diagnosed in children and young adults, must take insulin injections and watch their diet to keep their blood
VOA标准英语2015年(一月)
Air pollution outside is easy to spot, hanging over the city, or sputtering from a tailpipe. But there's lot of indoor air pollution, too, even if it's not as obvious. It's caused by volatile organic compounds, or VOCs. They can come from building ma
2016年Scientific American(八)月
An Even Deadlier Opioid, Carfentanil, Is Hitting The Streets play pause stop mute unmute max volume 00:0003:27repeat repeat off Update Required To play the media you will need to either update your browser to a recent version or update your Flash plu
2016年NPR美国国家公共电台9月
By Kari Barber Dakar 16 December 2006 In the Central African Republic, people displaced by fighting between government forces and rebels are reluctant to return home. Government forces say they have recaptured areas in the north that were seized by
2006年VOA标准英语（十二月）
4 Ways to Measure Your Standard of Living Standard of living should not equate to amount of spending. When I sat down to write an article on the countries with the highest standard of living, I thought it would be easy. But, how do you define standar
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