However, food boxes' position with respect to the surroundings could be changed by revolving either the innercage 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
The innercage lips have a close width tolerance.
内笼嘴唇有密切的宽度公差。
3
The innercage is made of advanced stainless steel. Advanced punching technique, decreasing the wear of clothing and being durable.