This is Scientific American's 60-Second Science. I'm Steve Mirsky. Got a minute? How do you know the moon is not made of green cheese? Theoretical physicist Sean Carroll at the ScienceWriters2011 conference in Flagstaff on October 17th. Well, we know

发表于:2018-12-24 / 阅读(42) / 评论(0) 分类 Scientific American(十)月

A sudden insight into Captain Nemo's plans had just flashed through my mind. I understood. 船长的计划突然给了我启示,使我心中雪亮,我明白了。 The marvelous talents of his Nautilus would be put to work once again in this super

发表于:2018-12-31 / 阅读(34) / 评论(0) 分类 《海底两万里》中英双语有声读物

Dieting isnt always easy, particularly if you have a sweet tooth. But by adding strawberries to your diet, you can enjoy a range of guilt-free dishes, drinks and snacks any time of day. Best of all, strawberries are low in calories, high in fiber, fa

发表于:2019-01-08 / 阅读(50) / 评论(0) 分类 阅读空间

Despite Paralysis, Hawking's Mind Soars When he turned 70 in 2012, Hawking was honored with a special exhibit at Londons Science Museum. The tribute gave visitors an inside look at the life and work of one of the world's greatest minds. We have some

发表于:2019-01-13 / 阅读(49) / 评论(0) 分类 VOA标准英语2013年(一月)

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

发表于:2019-02-05 / 阅读(40) / 评论(0) 分类 英语万花筒

People who habitually live at altitude have often spent thousands of years developing disproportionately large chests and lungs, increasing their density of oxygen-bearing red blood cells by almost a third, though there are limits to how much thicken

发表于:2019-02-25 / 阅读(46) / 评论(0) 分类 万物简史