faithfulness

例句：

1. 1. She is knownfor her unwavering faith in theteam's ability to win.
   她因对球队赢得比赛的坚定信念而闻名。
2. 2. The company's commitment to customerloyalty is a hallmark of its success.
   该公司对客户忠诚的承诺是其成功的标志。
3. 3. He was accused of being unfaithful in his relationship with hiswife.
   他被指控在与妻子的关系中不忠。