Pic Title: Big Dipper Related Phrase: 北斗七星 Related pictures: Big Dipper Source: http://2.im.guokr.com/ Pic Description: 　　It can be used to identify the direction of the Big Dipper? | FAQ | shell network science and technology interesting to find the Big Dipper in the northern hemisphere can follow Translated by Google No. / 20 Picture               Slide Show

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