我穿新鞋子脚后跟起了水泡。

I got blisters on my ___heels from my new shoes.

长途步行后，她揉了揉脚后跟。

She rubbed her ___heel after the long walk.

跑步时他感到脚后跟疼痛。

He felt a pain in his ___heel when running.