The stars being searched are hundreds of light years away, so it takes hundreds of years for their signal to reach us, and a further few hundred years for our reply to reach them.
被搜寻的星星离我们有几百光年远,所以它们的信号传到我们这里需要几百年,而我们的答复传到它们那里又需要几百年。
More than half the world's population lives in cities, the most light-polluted of which prevent even the Big Dipper from being seen.
超过半数的地球人口生活在城市,那些光污染最为严重的城市甚至连北斗七星也看不到。
An opinion has it that it saw light in the period 200-300 A. D., the place of production being Kasmir.
它在200-300 A. D.时期看到了光,诞生地点是克什米尔。
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