gatecrash
verb [ I or T ] informal uk/ˈɡeɪt.kræʃ/ us/ˈɡeɪt.kræʃ/
不请自到;擅自参加
to go to a party or other event when you have not been invited
He decided to gatecrash the wedding. 虽然没有接到邀请，他还是决定去参加婚礼。
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