years of service

• 服务年限

years of service的用法和样例：

例句

1. Data that focus not on age but on length of service give similar results and confirm that the frequency rate of work accidents decreases with length of service.
   事故的次数的多少与人的年龄无直接关系，但与服务的年限的长短有关，事故的频率随著服务年限的增长而减少。