have a dog in the fight
US /hæv ə dɔɡ ɪn ðə faɪt/
UK /hæv ə dɔɡ ɪn ðə faɪt/

1.
有切身利益, 有自己的盤算
to have a personal interest or stake in a situation or outcome
:
•
Of course he cares about the election results; he has a dog in the fight because his business will be directly affected.
他當然關心選舉結果;他有切身利益,因為他的生意將直接受到影響。
•
She claimed to be neutral, but everyone knew she had a dog in the fight.
她聲稱中立,但每個人都知道她有切身利益。