play in the tuning mechanism

例句：

1. 1. The car's engine needs tuning to improve performance.
   这辆车的引擎需要调校以提升性能。
2. 2. The radio tuner is tuned to the correct frequency.
   收音机调频器已经调到正确的频率。
3. 3. The musicians tuned their instruments before performing.
   演出前，音乐家们调整了他们的乐器。