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Jyutping se2 gei2 wai4 jan4
Pinyin shě jǐ wèi rén

Definitions (Wiktionary)
  1. phrase, idiomatic
    to sacrifice one's own interests for the sake of others

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Jyutping se2 gei2 wai6 jan4
Pinyin shě jǐ wèi rén

Definitions (CC-CEDICT)
  1. to abandon self for others (idiom, from Analects); to sacrifice one's own interest for other people
  2. altruism