VW will also be introducing its 7-speed DSG (dual-clutch) transmission in the Polo for the first time. Putting it to use in helping get those basement-low fuel economy ratings.是什么意思_VW will also be introducing its 7-speed DSG (dual-clutch) transmission in the Polo for the first time. Putting it to use in helping get those basement-low fuel economy ratings.在线翻译_英语_读音_用法_例句