tip是某物的尖，top是上面。最上面的小尖尖——顶好顶好、好上加好。tip-top为形容词，指顶尖的、一流的、头等的、极好的。

【例句】
I try and keep in tip-top shape by exercising every day.
我每天练习试图保持一流的体形。

You'll grow as a person and keep your resume in tip-top shape.
你会获得个人的成长，并恢复到最佳状态。