长年累月 cháng nián lěi yuè

DEFINITIONS

  1. year in, year out (idiom)
  2. (over) many years

CHARACTERS

长 cháng long; length; excel in; leader
年 nián year; new-years; person's age
累 lěi tired; implicate, involve; bother
月 yuè moon; month; KangXi radical 74