奥数
word C2- olympiad mathematics
- competition math
Other readings
- Ào ShùInternational Mathematical Olympiad (IMO) (abbr. for 國際奧林匹克數學競賽|国际奥林匹克数学竞赛[Guo2 ji4 Ao4 lin2 pi3 ke4 Shu4 xue2 Jing4 sai4])
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