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Jyutping ou3 coi3
Pinyin ào sài

Definitions (Wiktionary)
  1. noun
    Olympiad (science competitions), especially those organized in China
  2. name
    Orsay (a commune of the Essonne department, Île-de-France, France)
Examples (Wiktionary)
  1. Mandarin
    一场拯救可橙的行动在线上和线下展开,可橙的跨性别朋友、北京同志中心团队、曾举报豫章书院的温柔团队、OIer(信息学奥赛选手)救援团队等,一起加入,[…[[#Chinese|]]]
    一場拯救可橙的行動在線上和線下展開,可橙的跨性別朋友、北京同志中心團隊、曾舉報豫章書院的温柔團隊、OIer(信息學奧賽選手)救援團隊等,一起加入,[…[[#Chinese|]]]
    yī chǎng zhěng jiù kě chéng de xíng dòng zài xiàn shàng hé xiàn xià zhǎn kāi , kě chéng de kuà xìng bié péng yǒu , běi jīng tóng zhì zhōng xīn tuán duì , céng jǔ bào yù zhāng shū yuàn de wēn róu tuán duì , OIer ( xìn xī xué ào sài xuǎn shǒu ) jiù yuán tuán duì děng , yī qǐ jiā rù , …
    • A mission to save Kecheng was carried out both online and offline. Kecheng's transgender friends, the team at the Beijing LGBT Center, the team lead by Wenrou who had reported Yuzhang College, the OIer (participants in informatics olympiads) support team and so on has joined in on the action, […]