自动变速器
A gear stick (rarely spelled "gearstick"), gear lever (both UK English), gearshift or shifter (both U.S. English) is a metal lever attached to the shift assembly in an automobile transmission. The term "gear stick" mostly refers to the shift lever of a manual transmission, while in an automatic transmission, a similar lever is known as a gear selector. A gear stick will normally be used to change gear whilst depressing the clutch pedal with the left foot to disengage the engine from the drivetrain and wheels. Automatic transmission vehicles, including hydraulic (torque converter) automatic transmissions, automated manual and older semi-automatic transmissions (specifically clutchless manuals), like "VW Autostick", and those with continuously variable transmissions, do not require a physical clutch pedal.