他们中的许多相信随着时间的流逝，物质逐渐冷却，更多种类的原子开始形成，然后这些原子最终凝聚成了现在宇宙中的恒星和星系。
Many believe that as time passed and matter cooled, more diverse kinds of atoms began to form, and they eventually condensed into the stars and galaxies of our present universe.
他们中的许多相信随着时间的流逝，物质逐渐冷却，更多种类的原子开始形成，然后这些原子最终凝聚成了现在宇宙中的恒星和星系。
Many believe that as time passed and matter cooled, more diverse kinds of atoms began to form, and they eventually condensed into the stars and galaxies of our present universe.
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