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Jyutping bin3 sik1 ngaan5 geng3
Pinyin biàn sè yǎn jìng

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

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Jyutping bin3 sik1 ngaan5 geng2
Pinyin biàn sè yǎn jìng

Definitions (Wiktionary)
  1. noun
    photochromic glasses
    (syn.) 變色鏡, 变色镜