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1. Oxford Dictionary

   main sequence

   • n.
     a series of types to which most stars belong, represented on a Hertzsprung–Russell diagram as a continuous band extending from the upper left (hot, bright stars) to the lower right (cool, dim stars)

   • noun: main sequence

2. • 釋義

   n.

   名詞

   • 1. a series of types to which most stars belong, represented on a Hertzsprung–Russell diagram as a continuous band extending from the upper left (hot, bright stars) to the lower right (cool, dim stars) main sequence stars