huí guī
to return to
to retreat
regression (statistics)
huí guī xiàn
tropic
one of the two latitude lines, Tropic of Capricorn or Tropic of Cancer
huí guī zhōng guó
to return to China (e.g. Hong Kong)
huí guī nián
the solar year
the year defined as the period between successive equinoxes
xiàn xìng huí guī
linear regression (statistics)