main lifting elevator

例句：

1. 1.The main lifting elevator is located at the top of the building.
   主提升电梯位于大楼顶部。
2. 2. The main elevator is used for carrying heavy loads.
   主电梯用于搬运重物。
3. 3. The main lift has a capacity of 50 people.
   主电梯的容量为50人。