長年累月 (coeng4 nin4 leoi6 jyut6) — year after year; year in, year out; over the years; for years on end; for years and years; all the year round in Cantonese
coengˎ₄長ninˎ₄年leoiˍ₆累jyutˍ₆月简 长年累月
Mandarin Pinyin: chang2 nian2 lei3 yue4
Meaning of 長年累月
nounyear after year; year in, year out; over the years; for years on end; for years and years; all the year round