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。

youdao

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).

圆锥滚子轴承通常是分离型的，即由带滚子与保持架组件的内*$$}圈组成的圆锥内*$$}圈组件可以与圆锥外圈（外圈）分开安装。

youdao

The inner rings with roller and cage assembly and outer rings of SKF tapered roller bearings having the same designation are interchangeable.

SKF圆锥滚子轴承中型号相同的带滚子和保持架组件的内圈和外圈可互换。

youdao