on the ˈsafe sidebeing especially careful; taking no risks谨慎为是；不冒险I took some extra cash just to be on the safe side.我多带了一些现金，以防万一。on the safe side万无一失的;妥加准备以防万一的：Let’s be on the safe side and take more money than we think we will need.我们要多带点钱，以备不时之需，方为万无一失。 |