Definition
to handle, modify, or manage something in a negligent or detrimental manner
随意改动；随便更改；不当处理
You shouldn't monkey around with that machine; it could get damaged.
你不应该随便乱动那台机器；它可能会损坏。
He monkeyed around with my report, and it lost its original meaning completely.
他随便改动了我的报告，结果完全失去了原来的意义。
It's very risky to monkey around with the code without understanding it.
在不理解的情况下随便改动代码是非常危险的。