沿洄

yánhuí
to go with the stream

CEDICT

顺流而下或逆流而上。

重編國語辭典

Entry Composition

1 沿 yán
  1. along
  2. to follow (a line, tradition etc)
  3. to carry on
  4. to trim (a border with braid, tape etc)
  5. border
  6. edge
2 洄 huí
  1. eddying
  2. whirling (of water)
  3. to go against the current