这颗恒星曾和太阳一样，是颗“主序星”(“main sequence”)。它通过核聚变燃烧氢，从而产生氦。

The star used to be like the sun, a "main sequence" star that burns hydrogen by nuclear fusion, producing helium.

youdao

这颗恒星曾和太阳一样，是颗“主序星”(“main sequence”)。它通过核聚变燃烧氢，从而产生氦。

The star used to be like the sun, a "main sequence" star that burns hydrogen by nuclear fusion, producing helium.

youdao