the Big Dipper

基本解释

By habit, he looked upwards and saw Orion, the Big Dipper and the Pole Star, twinkling in the autumn sky.
习惯地，他往上看去，看到了猎户星座、北斗七星和北极星在秋季天穹下熠熠发光。
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。
Since we complete a circle around the sun every year, the stars of summer, such as those in the Big Dipper, are always the stars of summer.
由于每年绕着太阳完成一个循环，夏日里我们所看到的星星，比如北斗七星，它们始终在其他年份的夏天里也都能看得到。

On a good night, this camera will be able to map a swathe of sky approximately the size of the Plough's blade (or, for North Americans, the Big Dipper's bucket).
ECONOMIST: The Sloan star survey