英语语法分析

It is the brightest star at the left of this well-composed starry mosaic spanning about 23 degrees across the northern sky asterism dubbed the Little Dipper.

它是这张精心构图的星图左侧最亮的恒星，横跨北部天空偏星约23度，被称为小北斗星。

The bright dipper stars above are named Dubhe, Merak, Phecda, Megrez, Alioth, Mizar, and Alkaid.

上面明亮的北斗七星名字依次是：天枢，天璇，天玑，天权，玉衡，开阳，摇光。

Part of the larger constellation of Ursa Major, the bright dipper stars above are named Dubhe, Merak, Phecda, and Megrez.

它是大熊座巨大星群的一部分，上面明亮的北斗七星名字依次是：天枢，天璇，天玑，天权。