electric switching locomotive

例句：

1. 1. The new electric switching locomotive is expected to significantly reduce emissions.
   新型电动开关机车预计将显著减少排放。
2. 2.The engineers have been working on developing a more efficient electric switching locomotive.
   工程师们一直在努力开发一种更高效的电动开关机车。
3. 3. The electric switching locomotive has revolutionized the way we move our heavy equipment.
   电动开关机车已经彻底改变了我们搬运重型设备的方式。