an action or thing that causes someone or something to become more active or enthusiastic, or to develop or operate

While she was at home looking after her children, she felt deprived of intellectual stimulation. 她在家里照顾孩子的时候，觉得被剥夺了活跃大脑的机会。

Electric stimulation can help to heal fractured bones. 电刺激有助于断骨愈合。