pain

他昨晚感到膝盖一阵剧痛。

He felt a sharp ___pain in his knee last night.

失去所爱之人的痛苦是难以忍受的。

The ___pain of losing a loved one is unbearable.

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.