恳挚

例句：

1. 1. He expressed his gratitude with a heartfelt plea for help.
   他以一颗真诚的心请求帮助。
2. 2. The manager's words were sincere and heartfelt, touching the hearts of all employees.
   经理的话语真诚而感人，触动了所有员工的心。
3. 3. Her smile was genuine, reflecting her deep-seated kindness.
   她的微笑是真诚的，反映了她内心深处的善良。