beat somebody at their own game
US /biːt ˈsʌm.bɑː.di æt ðer oʊn ɡeɪm/
UK /biːt ˈsʌm.bɑː.di æt ðer oʊn ɡeɪm/
1.
以其人之道還治其人之身, 以毒攻毒
to use an opponent's own methods to defeat them
:
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The new company managed to beat their competitor at their own game by offering better customer service.
新公司透過提供更好的客戶服務，成功地以其人之道還治其人之身，擊敗了競爭對手。
•
He thought he could trick me, but I decided to beat him at his own game.
他以為他能騙我，但我決定以其人之道還治其人之身。