长期以来 cháng qī yǐ lái

DEFINITIONS

  1. ever since a long time ago

CHARACTERS

长 cháng
HSK 2
long; length; excel in; leader
期 qī
HSK 1
period of time; date; time limit
以 yǐ
HSK 2
by means of; thereby, therefore; consider as; in order to
来 lái
HSK 1
come, coming; return, returning