按扣

These earrings snap on with special fasteners.

这副耳特制的按上去的。

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.

将耳机挂钩底部按在耳机下端的上，从下端按拉起并将挂钩上端与耳机顶部紧。