two-speed final gear

例句：

1. 1.The car has a two-speed final gear, which makes it easy to switch between high and low gears.
   这辆车有两个速的最终档位，这使得在高低速之间切换变得很容易。
2. 2. The bike has a two-speed final gear, which is perfect for riding in the city.
   这辆自行车有两个速的最终档位，非常适合在城市里骑行。
3. 3. The car has a two-speed final gear, which allows you to easily change gears without having to stop.
   这辆车有两个速的最终档位，这使得你可以轻松地换挡而不需要停下来。