double-decker
noun /ˌdʌbl ˈdekə(r)/
/ˌdʌbl ˈdekər/
- enlarge imagea bus with two floors, one on top of the other
双层公共汽车 compare single-deckerTopics Transport by bus and trainc1 - (North American English) a sandwich made from three pieces of bread with two layers of food between them
双层三明治