柯林斯詞典automatic transmission 1. N-UNCOUNT A car that is equipped with automatic transmission has a gear system in which the gears change automatically. 自動變速裝置 返回 automatic transmission劍橋詞典a system that allows a vehicle to change gear without being controlled by the driver (車輛的)自動變速器,自動排擋 比較manual transmission 返回 automatic transmission