hazardn.危险；冒险；危害vt.冒险；赌运气阿扎尔（英超切尔西队球员）hazard threshold危险阀值hazard way light危险信号闪光hazard detection冒险检测hazard avoidance危险规避hazards elements有害元素hazard insurance自然灾害保险hazard to health对健康的危害hazard geography灾害地理学hazard of animal动物受害hazard of forest森林受害