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Jyutping dei6 gau2 tin1 coeng4
Pinyin dì jiǔ tiān cháng

Definitions (CC-CEDICT)
  1. enduring while the world lasts (idiom, from Laozi); eternal
  2. for ever and ever (of friendship, hate etc)
  3. also written 天長地久|天长地久
Definitions (Kaifangcidian)
  1. (沒有對應漢語詞彙)