A person's seniority in an organization is the importance and power that they have compared with others, or the fact that they have worked there for a long time. 资历; 年资
noun [专属名词]年长,职位高;资历,年资
He has said he will fire editorial employees without regard to seniority. 他说过在解雇编辑人员时他不会考虑其资历如何。