tinker

On weekends, he loves to tinker with old clocks in his garage workshop.

(Chinese) 周末，他喜欢在车库工作间里摆弄那些旧钟表。

The engineers spent the afternoon tinkering with the prototype to fix the engine noise.

(Chinese) 工程师们花了一个下午的时间调试原型机，以解决发动机噪音问题。