It means the greatest, the strongest, the ablest, the most admired. That is what you want to be.

而是说成为最伟大,最强壮,最能干,最受尊敬的人,这才是你该成为的人"

耶鲁公开课 - 古希腊历史简介课程节选

Because this friend has a great body and you can tell that his muscles are bigger than average.

因为这个朋友身材特别棒，看得出他的肌肉比一般人要强壮。

Do you 课堂 - SpeakingMax英语口语达人