However, food boxes' position with respect to the surroundings could be changed by revolving either the inner cage containing the birds or the outer walls, which served as the background.
但是,通过旋转鸟笼内部(鸟在里面)或者旋转充当背景的外墙,餐盒与周围环境的相对位置可能会发生改变。
2
Tapered roller bearings are generally separable, i. E. The cone, consisting of the inner ring with roller and cage assembly, can be mounted separately from the cup (outer ring).