You use precise to emphasize that you are referring to an exact thing, rather than something vague.
imprecise , inexact , inaccurate , vague
I can remember the precise moment when my daughter came to see me and her new baby brother in the hospital.
我还清楚的记得我女儿来医院看望我和她刚出生的弟弟的那一刻。
The precise location of the wreck was discovered in 1988.
船舶失事的确切地点是在1988年发现的。
He was not clear on the precise nature of his mission.
他对自己使命的确切本质并不清楚。
We will never know the precise details of his death.
我们永远都不会知道他死亡的确切细节。
Something that is precise is exact and accurate in all its details.
They speak very precise English.
他们的英语说得非常标准。
His comments were precise and to the point.
他的评论准确到位。