adjustable rail fastener的用法和样例：
- The track framework stiffness composed by the lateral stiffness of rail and the torsion resistances of rail fastenings is another important factor of resisting track"s buckling.
- He's nipped his thumb in the fastener.
- In addition, the disposal approach of rigidity of rail fastenings was discussed based on the model so as to eliminate the variety of track rigidity of a turnout and homogenize the rigidity of track.
- It's cheaper to ship goods by road than by rail.