intestinal fortitude
noun [ U ] US uk/ɪn.tesˌtaɪn.əl ˈfɔː.tɪ.tjuːd/ us/ɪnˌtes.tɪn.əl ˈfɔːr.t̬ə.tuːd/
勇气;毅力
courage and determination
The fact that he's still trying for the championship is a tribute to his intestinal fortitude. 他仍在为争夺冠军而努力，这说明他勇敢顽强，意志坚韧。