Definition
to have a negative impact on someone or something, increasing the chances of failure
對某人或某事不利；對其有負面影響
Arriving late for the interview will count against you.
面試遲到會對你不利。
Her absence will count against the team's overall performance.
她的缺席將對團隊的整體表現不利。
The failing grade on this exam will count against his college applications.
這次考試不及格將對他的大學申請不利。