英语笔记 Earth and sky: the milky way

出处: http://www.earthsky.org/radioshows/52025/the-sagittarius-arm-of-the-galaxy

the milky way: 银河
Constellation: 星座,星群. Simply put, constellations are arbitrary groupings of stars that have been constructed so as to assist in the location and identification of stars.(from wiki answers)
starlit trail: 星光带
billowy: 汹涌的. n: billow: A large wave or swell of water.

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