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Jyutping deon1 baan1
Pinyin dūn bān

Definitions (Kaifangcidian)
  1. (沒有對應漢語詞彙)

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Jyutping cyun4 baan1
Pinyin dūn bān

Definitions (Wiktionary)
  1. verb, colloquial
    to repeat a grade
    (syn.) 踏級, 㨆班, 坐班, 落第, 留級, 降班, 留班, 甪班, 蹲級, 笪班, 蹲班