如果把一枚别针放在铁路钢轨上，让火车从上面压过，别针就会变成一把闪光发亮的新剪刀。
平安针
safety pin
暂无补充释义。
相关例句
少年借用一枚安全别针逃跑出来。
相关词条
margin of safety
Bio-safety Cabinet
margin of safety
safety glass
feeling of safety
secondary safety valve(for inner container)
safety lock
three-point safety belt