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Now, try to imagine 1,000 million years! 现在试着想象10亿年（有多长）！ At that time there were no large animals, just creatures like snails and worms. 当时还没有巨型动物，只有蜗牛和虫这样的生物。 And before then t
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M: Excuse me! W: May I help you? M: Yes, I'd like to send this book to France. W: Let me weight it first. That'll be 14 dollars. M: Can it go in an envelop? W: Of course, it's 4 dollars now. M: Do I need stamps? W: No, you don't. We use computers no
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Many regions within these clouds can stay like that for ever for millions of years until something happens, a trigger and then a star forms.The trigger for such a monumental event doesn't have to be much, two clouds conbine as they pass, or a distant
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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
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M: Excuse me! W: May I help you? M: Yes, I'd like to send this book to France. W: Let me weight it first. That'll be 14 dollars. M: Can it go in an envelop? W: Of course, it's 4 dollars now. M: Do I need stamps? W: No, you don't. We use computers now
英语口语
I left out in a cloud of taillights and dust Swore I wasn't coming back, said I'd had enough Saw you in the rear view standing fading from my life But I wasn't turning around, no not this time but Chorus: Don't Think I Don't Think About It Don't thin
美国乡村音乐