tinkering

She spent the afernoon tinkering about in the garden shed.

她在花园小棚屋里补补了一个下午。

He’s outside tinkering around with his bike.

在外面捣鼓行车。

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

们对系统没有做出何真正改进—只不过是一补补。