1tamper with somethingphrasal verbphr vDAMAGEto touch something or make changes to it without permission, especially in order to deliberately damage it 胡乱摆弄;擅自改动〔尤指为了故意损坏〕
He noticed that the instruments had been tampered with.
他注意到仪器被人动过了。
I don’t see the point in tampering with a system that’s worked fine so far.