tune-up
/ˈtjuːnʌp/noun
1- an act of tuning something up调整, 调节：
take your car in for a tune-up if it's an older model.
如果你的车是旧型号的, 你就送进去调试一下。
1.1
- chiefly US a sporting event that serves as a practice for a subsequent event〈主美〉（比赛前的）热身赛：
a tune-up for the college's fall league.
大学秋季联赛的热身赛。