布朗说，在银河系的一生中，黑洞也许用这种方法从银河中甩掉了一百颗恒星。
Over the Milky Way's lifetime, says Brown, the black hole may have flung a million stars out of the galaxy in this fashion.
计算工作以恒星一生中不同阶段具体的核反应速率为基础。
The calculations are based on nuclear reaction rates, computed for different stages of a star's life.
恒星一生的能量来源，几乎都来自中心的核反应，过程中会耗尽所有可用的氢，然后是氦。
Nuclear reactions in such a star's core, the source of power for nearly its entire life, deplete the available hydrogen, then the helium.
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