按扣

These earrings snap on with special fasteners.

这副耳环是用特制按上。

Hook the bottom of the earhook onto the lower hinge pin, then lift and pull the top of the earhook over the upper hinge pin.

耳机挂钩底部按在耳机下端上，从下端按拉起并挂钩上端与耳机顶部紧。