The bottom of the cradle is provided with a metal bush (5) so as to guide a rotating shaft (3).

在锭座的底部装有一个金属轴瓦(5)用来给转轴(3)进行导向。

youdao

The anodized aluminum chassis curves around to cradle the LCD on the left and right, but it's flat on the top and bottom, with edges exhibiting the subtle chamfering that appears to be all the rage these days.

ENGADGET: iPod nano review (2012)