跑完步后我突然感到胸口一阵疼痛。

I felt a sudden ___pain in my chest after running.

他昨晚感到膝盖一阵剧痛。

He felt a sharp ___pain in his knee last night.

她忍受着背部的疼痛继续工作。

She continued working despite the ___pain in her back.