double-decker是什么意思

double-decker[英][ˈdʌblˈdekə][美][ˈdʌbəlˈdɛkɚ]n.双层电汽车双层甲板船<美口>双层夹三明治; 例句:The icc also employs hong kong's first double-decker elevators, which can serve two floors at the same time, reducing the need for extra shafts.环球贸易广场使用香港首部双层电梯同两层顾客提供服务减少修建更电梯升降井必要