| 1. | Because of the large mass , after the hydrogen burning , the temperature and pressure of the core is high enough to trigger helium burning to carbon , and a hydrogen burning shell is developed around the core
由于大质量恒星的核心比一般恒星更热和有更高的密度，当走至生命尽头时，核心条件足以把氦继续转化为碳，同时在核心外围形成一个氦壳。 |
