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Jyutping coi3 sin1 saang1
Pinyin sài xiān sheng

Definitions (CC-CEDICT)
  1. "Mr Science", phrase used during the May 4th Movement 五四運動|五四运动[Wu3 si4 Yun4 dong4]
  2. abbr. for 賽因斯|赛因斯[sai4 yin1 si1]
  3. see also 德先生[De2 xian1 sheng5]