natural excitation

例句：

1. 1.The scientist observed that the natural excitationof the cells was crucial to their function.
   科学家观察到细胞的自然激发对其功能至关重要。
2. 2.The child's natural excitation madehim jump up and down excitedly.
   孩子的自然兴奋让他兴奋地跳来跳去。
3. 3. The researcher found that the naturalexcitation of the brain could be harnessed for therapeutic purposes.
   研究者发现大脑的自然激发可以被利用来进行治疗。