逆流 nìliú countercurrent Origin Definitions Defs Strokes Stroke Words Sentences Sents 逆流而上 nìliú'érshàng upstream to sail, swim, or move against the physical current of a body of water赤道逆流 chìdàonìliú equatorial countercurrent equatorial counter current逆流溯源 nìliúsùyuán trace back to go back to the source