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Jyutping aap3 zeoi2 bat1
Pinyin yā zuǐ bǐ

Definitions (Wiktionary)
  1. noun
    ruling pen
    (syn.) 乌嘴笔, 鴉嘴筆, 鸦嘴笔, 烏嘴筆
Definitions (Kaifangcidian)
  1. (沒有對應漢語詞彙)