名詞 roadster:

1. an open automobile having a front seat and a rumble seat
   同義詞：runabout, two-seater
2. a small lightweight carriage; drawn by a single horse
   同義詞：buggy

road.ster

n.（名詞）
An open automobile having a single seat in the front for two or three people and a rumble seat or luggage compartment in the back.
敞篷客車：一種車前裝有可供二三人坐的排座，車后設(shè)有可作行李倉(cāng)的折疊加座的敞篷車
A horse for riding on a road.
用于在公路上騎的馬