耿耿忠心忠肝义胆(zhōng gān yì dǎn): ⒈ 犹忠心赤胆。忠贞不渝(zhōng zhēn bù yú): ⒈ 贞:意志或操守坚定不移;渝:改变,违背。忠诚坚定,永不改变。赤胆忠心(chì dǎn z...