tinkering

1.He’s outside tinkering around with his bike.

他在外面捣鼓他的自行车。

2.She spent the afernoon tinkering about in the garden shed.

她在花园的小棚屋里修修补补了一个下午。

3.They haven’t made any real changes to the system — they’ve just been tinkering around a bit.

他们对系统没有做出何真正的改进—只不过是一点修修补补。