quick-change engine unit

例句：

1. 1. The new model car features a quick-change gearbox that makes shifting easier.
   这款新车配备了一个快速换挡的变速箱，使得换挡更加便捷。
2. 2.The engineers quickly replaced the faulty engine unit, saving time and money.
   工程师们迅速更换了故障的发动机单元，节省了时间和金钱。
3. 3. The quick-change unit is designed to allow for easy maintenance and repair of the vehicle's components.
   快速换装单元的设计旨在使车辆部件的维护和修理变得简单易行。