忠于职守 be devoted to their duty ; devotion to duty ; Dedicated

坚持、忠于、信守 stick to

忠于坚守 stand by

不忠于职守 be recreant to one's task

对人民忠于职守的警察 People dedicated police ; People faithful to police

守信/忠于信仰 keep faith

忠于职守的人爱生活 Dedicated people who love life