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Jyutping dang1 si1
Pinyin dēng sī

Definitions (CC-CEDICT)
  1. filament (in a lightbulb)
Definitions (Wiktionary)
  1. noun
    filament (wire in an incandescent light bulb)
Definitions (Kaifangcidian)
  1. (沒有對應漢語詞彙)