这家农场专门提供优质的牛肉。

This farm specializes in ___prime quality beef.

健康饮食是保持身体健康的首要因素。

A healthy diet is the ___prime factor for maintaining good health.

教练在比赛前给队员们做了详细指导。

The coach ___primed the players with detailed instructions before the game.

这位歌手在30岁时正处于演艺生涯的巅峰时期。

The singer was in his ___prime at the age of 30.

13是一个质数，因为它只能被1和它本身整除。

13 is a ___prime number since it can only be divided by 1 and itself.