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Jyutping tin1 man4 daan1 wai6
Pinyin tiān wén dān wèi

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

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Jyutping tin1 man4 daan1 wai2
Pinyin tiān wén dān wèi

Definitions (CC-CEDICT)
  1. astronomical unit (AU)
Definitions (Wiktionary)
  1. noun
    astronomical unit