tune-up

名词 tune-up:

1. exercising in preparation for strenuous activity
   同义词：warm-up, prolusion
2. adjustments made to an engine to improve its performance

动词 tune-up:

1. adjust for (better) functioning
   同义词：tune, tune up
2. adjust the pitches of (musical instruments)
   同义词：tune, tune up

1. My car needsa tune-up.
   我的汽车的发动机得调一调了。