1. (电梯等的)升降机井，竖井，井筒，通风井
    A shaft is a long vertical passage, for example for a lift.

    e.g. He was found dead at the bottom of a lift shaft.
           他被发现死在了电梯井的底部。
    e.g. ...old mine shafts.
           老式矿井

2. (机械的)轴，传动轴
    In a machine, a shaft is a rod that turns round continually in order to transfer movement in the machine.

    e.g. ...a drive shaft.
           驱动轴
    e.g. ...the propeller shaft.
           螺旋桨的传动轴

3. (矛、高尔夫球棒等的)杆;(斧头等的)柄
    A shaft is a long thin piece of wood or metal that forms part of a spear, axe, golf club, or other object.

    e.g. ...golf clubs with steel shafts.
           带钢杆的高尔夫球棒

4. (光线、阳光等的)一束，一道
    A shaft of light is a beam of light, for example sunlight shining through an opening.

    e.g. A brilliant shaft of sunlight burst through the doorway.
           一束耀眼的阳光从门口照射进来。