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This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. The Earths original atmosphere would have been unpleasantdeadly in factto any organisms that breathe oxygen. There wasnt any. Not until about 2.4 billi
Yvonne: This is 6 Minute English, I'm Yvonne Archer - and Finn has kindly joined mefor today's programme. Hello Finn! Finn: Hello Yvonne how are you? Yvonne: Oh, I'm great thanks! Now, 2011 is the year of the Rabbit in the Chinese lunarcalendar - and
This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute. In 1953 a student named Stanley Miller did an experiment showing that the simple chemicals present on the early Earth could give rise to the basic buildi
Let us return to original chaos! 让我们重归于元始的混沌! Let us imagine the primordial din, the original vortex! 让我们臆想那本初的喧嚣、元始的漩涡! Let us throw ourselves into the whirlwind which has preceded the crea
Astrophysics 天体物理 Dust to dust 尘归尘,土归土 A dramatic recent discovery in physics is looking rather dodgy 近期,物理学中的一项戏剧性发现看上出非常模糊 IN MARCH Chao-Lin Kuo, an astrophysicist at Stanford Univer
Eat和drink这两个最基本的动词,在英语里的使用方法和中文很不一样!比如喝汤,不是drink soup; 而吃药,也不是eat medicine. 今天, Jenny, Spencer就要教你如何正确使用eat和drink! 汤不是喝的, 而是吃的