tune-up
noun[Cusually singular]
uk/ˈtʃuːn.ʌp/us/ˈtuːn.ʌp/tune-upnoun[C usually singular](OF ENGINE)
(UKalsotune)
theactof makingsmallchangesto anengineso that itworksas well aspossible
把（发动机）调试到最佳运转状态
Theengineneedsa tune-up, and can youtestthebrakestoo,please?发动机需要调试一下，还有请再测试一下刹车好吗？
tune-upnoun[C usually singular](PREPARATION)
theactofpreparingfor something, or ofpreparingsomething for something
为…做好准备
a tune-upgame/fight预备游戏／搏击
In a tune-upforhispresidentialrace, heranfor aseatin Croatia'sparliament.为了准备竞选总统，他先参加了克罗地亚议会议员的竞选。