n.紧固件,钮扣,钮扣,使系牢之物
The shed was secured by a hasp and staple fastener.
棚屋由一个搭钩和U型扣件固定着。
The zip fastener had long since been wrenched out of them.
拉练早已取走了.
These earrings snap on with special fastener.
这付耳环是用特制的按扣扣上去的.