lifer的复数形式怎么写？

The guilty criminal got a lifer, he was sentenced to forty years in prison.那个罪犯肯定要在监狱里面待很久了, 他被判刑四十年.Daniel Sparks, the Houston - born Goldman lifer who ran the mortgage department, usually arrived by a.m.当时在该部门工作的人士说, 抵...

lifer的音标：lifer的英式发音音标为：['laɪfə(r)]lifer的美式发音音标为：['laɪfɚ]...

n.无期徒刑犯，职业军人...