Definition
To suddenly and impulsively decide to do something, often something unexpected or foolish.
突发奇想
She took it into her head to quit her job and travel.
她突然心血来潮辞掉工作去旅行。
He took it into his head yesterday to dye his hair pink.
他昨天突然心血来潮把头发染成粉红色。
The children took it into their heads to dance in the rain.
孩子们突然心血来潮在雨中跳舞。