按扣

These earrings snap on with special fasteners.

这副耳环是用特制的上去的。

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.

将耳机挂钩底部在耳机下的上，从下并将挂钩上与耳机顶部紧。