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Jyutping gaa1 si4 coi3
Pinyin jiā shí sài

Definitions (Wiktionary)
  1. noun
    overtime; extra time
Definitions (兩岸三地生活差異詞語彙編—Two Shores Three Places)
  1. 體育規則和競賽:臺
    延長賽
  2. 體育規則和競賽:陸
    加時賽
  3. 體育規則和競賽:香
    加時賽
  4. 體育規則和競賽:澳
    加時賽

加時賽 [-时赛]

Jyutping
Pinyin jiā shí sài

Definitions (CC-CEDICT)
  1. (sports) overtime
  2. extra time
  3. play-off
Examples (Tatoeba—Mandarin-English)
  1. Mandarin
    他们很幸运比赛进入加时赛,因为他们最终获胜。
    他們很幸運比賽進入加時賽,因為他們最終獲勝。
    tā men hěn xìng yùn bǐ sài jìn rù jiā shí sài , yīn wèi tā men zuì zhōng huò shèng 。
    • They were lucky the game went into extra time because they ended up winning.