bet on1.■赌钱,为(赛马、某比赛者)打赌:He bet on that horse.他把赌注下在那匹马上。She bet a month's salary on the black horse.她对那匹黑马下了一个月的薪水的赌注。2.■过分自信;碰运气;对…侥幸:Don't bet on winning the game.不要以为能侥幸赢得比赛。I daren't bet on the plane arriving on time.我不敢断定飞机会准时抵达。