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Jyutping gwong1 cuk1
Pinyin guāng shù

Definitions (CC-CEDICT)
  1. light beam
Definitions (粵典–words.hk)
  1. x
Definitions (Wiktionary)
  1. noun
    ray of light; light beam
Definitions (Kaifangcidian)
  1. (沒有對應漢語詞彙)
Examples (Wiktionary)
  1. Mandarin
    光束
    光束
    guāng shù
    • light beam