忠实于

[zhōng shí yú]

• be loyal to
• be faithful to

例句

1. 两位朋友发誓不管发生什么事，都要忠实于对方。
   The two friends vowed to stick by one another no matter what happened.
2. 玛丽忠实于她的丈夫。
   Mary is faithful to her husband.
3. 他忠实于他的信仰。
   He holds to his convictions.