Chinese

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to circle; to go back; to turn around
to circle; to go back; to turn around; to answer; to return; to revolve; (a measure word for matters or actions) a time; Islam
 
envelope; case; letter
simp. and trad.
(回函)

Pronunciation

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Noun

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回函

  1. response letter
    Synonym: 回信 (huíxìn)