Own goal
无意中做出对自己或自己团队不利的事情，导致负面结果。
用于形容自毁长城或帮倒忙的行为。
英文释义
To do something accidentally negative against your own team.
例句
His careless comment was an own goal, costing the team the deal.
典故来源
源自足球术语，指球员不慎将球踢进自家球门，导致对方得分。