tamper with something
phrasal verb with tamper verb uk/ˈtæm.pər/ us/ˈtæm.pɚ/
胡乱摆弄；擅自改动；蓄意破坏
to touch or make changes to something that you should not, usually without enough knowledge of how it works or when you are trying to damage it
I could see immediately that the lock had been tampered with. 我一下子就看出锁已被人动过了。