第三人称复数：snap fasteners
1. 急钮 四合扣：及骨车 包缝机,锁边机 OVERLOCK MACHINE | 急钮 四合扣 SNAP FASTENER | 夹圈 袖窿 ARMHOLE
2. 按扣：snakeskin蛇皮 | snap fastener按扣 | sneaker膠底帆布運動鞋
3. 四合扣：Metal Pin Buckle 铁线针扣 | Snap Fastener 四合扣 | Turn Locks 拧制
4. 弹簧搭扣：snap fastener 按扣; 揿钮 | snap-fastener 弹簧搭扣 | spring fastener 弹簧扣
noun
1. a fastener used on clothing
fastens with a snapping sound
e.g. children can manage snaps better than buttons
Synonym: snap press stud