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Jyutping am1 suk6
Pinyin ān shú

Definitions (Wiktionary)
  1. verb
    to be familiar with; to be proficient in; to be conversant with
    (syn.) 熟谙, 熟諳
Definitions (Kaifangcidian)
  1. (沒有對應漢語詞彙)

諳熟 [谙-]

Jyutping
Pinyin ān shú

Definitions (CC-CEDICT)
  1. to be proficient in