fiddle with

基本解释

She took my kids into the garden and, on returning, found me fiddling with her CD player.
她把我的孩子们带到花园里，等她回来时发现我在玩弄她的CD机。
She argues that better enforcement of the existing system would do more to inform the public of what is done in its name than fiddling with it.
她提出相比于现有系统胡乱改造，加强管理对告知公众政府在以何为名做何事起到的作用更大。
The charming Kroc crowed, “Now we will have a club over [franchise managers], and by God there will be no more pampering or fiddling with them”.
极富魅力的克洛克洋洋得意地说“现在我们将成立特许经销商的俱乐部，上帝作证，他们中绝不会有人被偏袒或愚弄。”

Now, neurotransmitters become interesting because a lot of psychopharmacology, both of the medical sort and the recreational sort, consists of fiddling with neurotransmitters and so you could see this through some examples.
神经递质非常的有意思,因为很多类型的精神药理学,不论是医疗类的还是消遣类的,都在研究对神经递质的控制,所以你们可以通过些例子来了解这一点
耶鲁公开课 - 心理学导论课程节选

Or maybe it was the result of the 59th attempt of fiddling with the concept.
FORBES: You Have THE BIG IDEA, What Do You Do Next?
Washington politicians have spent years fiddling with carrots and sticks and regulations and mandates.
FORBES: Government Mandates Make Health Savings More Elusive
But fiddling with your GPS, especially when driving a new route, can be downright dangerous.
FORBES: Magazine Article