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Rho Ophiuchi dark cloud is one of the closest star-forming regions to our own solar system. Located near the constellations Scorpius and Ophiuchus, the nebula is about 407 light years away from Earth. The infrared astronomical satellite, now celebra
国家地理2008年
on a cloud under a cloud 你们肯定都知道英文里的前置词有时会使人很混乱，它们在句子里虽然不显眼，但是作用却很关键，用错了一个前置词意思可能完全不
美国习惯用语
What came first, the chicken or the egg? 先有鸡还是先有蛋？ The egg. Final answer. As the geneticist Haldane remarked, The most frequently asked question is: 'Which came first, the chicken or the egg?' The fact that it is still asked proves
英语笔译
The happiest words you are saying The nicest songs you are singing The warmest voices you are having The saddest smiles you are blooming The most beautiful shades you are leaving The glariest turning you are taking The easiest changes you are making
金属
Roaming Cloud by Rabindranath Tagore I am like a remnant of a cloud of autumn uselessly roaming in the sky, O my sun ever-glorious! Thy touch has not yet melted my vapor, making me one with thy light, and thus I count months and years separated from
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SAN FRANCISCO, June 28 (Xinhua) -- Microsoft on Tuesday launched its cloud service Office 365, which was the software giant's answer to competing products from Google and other companies. The service includes on-line versions of Word, PowerPoint, Exc
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