A border, edge, or margin of an object, esp. when bound or raised.

缘；边(尤指镶边或高起的边缘)。

Outer hoop of a wheel.

(车胎的)轮圈。

To furnish with a border or edge.

围以边缘；装边。

To serve as a border around.

作为边缘。

To roll around the rim of without going in.

于边缘绕转而不进入。