Entwistle' gearing

例句：

1. 2.
   用于机械的
2. 3.
   尤指汽车的
3. 1. The car has a modern gearbox that allows for easy shifting.
   这辆汽车有一个现代的变速箱，可以轻松换挡。
4. 2. The old farm had a manual gearbox that was difficult to use.
   旧农场有一台手动变速箱，使用起来很困难。
5. 3. The new sports car has an automatic gearbox that makes driving smooth and efficient.
   这款新款跑车配备了自动变速箱，驾驶起来既平滑又高效。