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Jyutping daap6 gap3
Pinyin dié hé

Definitions (Wiktionary)
  1. verb
    to superimpose; to superpose; to overlap

疊合 [叠-]

Jyutping
Pinyin dié hé

Definitions (CC-CEDICT)
  1. to overlay; to superpose; to superimpose; to overlap