stellar population造句怎么写

Although researchers have yet to learn much about the stellar populations within these galaxies, one thing they do know is that "the galaxies are extremely blue," says Robertson.

人有自信，才能有魄力，人有胆识，才能有本钱，人有规矩，才能有学问，人有别人没有的，减去别人有的，才能成长，改变自我，从减法开始。