隔三差五 [－－－－]

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Pinyin gé sān chà wǔ

Definitions (CC-CEDICT)
  1. every few days (idiom)
Definitions (Wiktionary)
  1. phrase, idiomatic
    every now and then; every so often; every once in a while
    (syn.) 三不五時, 三不二时, 三不五时, 三不二時
Definitions (兩岸三地生活差異詞語彙編—Two Shores Three Places)
  1. 日常用語：臺
    三不五時
  2. 日常用語：陸
    隔三差五