长久以来 chángjiǔyǐlái for a long time Origin Definitions Defs Strokes Stroke Words Sentences Sents 长久 長久 chángjiǔ adverbadjective for a long time lasting for a long time; enduring; permanent; for a long period以来 以來 yǐlái preposition since since a specific time in the past until now; in the past period of time