长期以来 chángqīyǐlái HSK7 for a long time Definitions Defs Origin Strokes Stroke Words Sentences Sents 长期 長期 chángqī adjectiveadverb long-term a long period of time; long-range以来 以來 yǐlái preposition since since a specific time in the past until now; in the past period of time
