gamble on1.■对…打赌，对…投机：Are you going to gamble on the result of the fight?你准备对这场拳击赛的结果下赌注吗?2.■碰运气；存侥幸心理；冒险，冒险假设；对…确信无疑：They carried out the robbery on Christmas Day, gambling on no one being in the building.他们估计圣诞节那天大楼里无人，便冒险在那天行窃。Don't gamble on getting the job.别太确信你能得到这份工作。