n.(生理；心理上的)剧痛；刺痛
v.（使）感到剧痛
I feel a twinge in my back now and again. 我不时感到背痛。
But each time again there was a horrid twinge of conscience. 但同时，每一次又都要承受良心上的煎熬。
The letter still gives him a twinge when he thinks of it. 他一想起那封信就会感到一阵刺痛。
