They searched the area for something larger and came upon a railroad tie.

他们继续找啊找，想找一个大一点的家伙。咦，看到了一根火车道上的枕木。

There had to be a significant amount of water in this area, water high enough to lift that railroad tie sized piece of timber and float is perhaps several miles.

必须有大量的水在这方面，水高到足以解除该枕木大小一块木材和浮动也许是几英里。

Therefore, buckles to have the enough intensity, the durability, with certain elasticity, and effective maintains between the rail and the railroad tie reliable joint.

为此，扣件必须具有足够的强度，耐久性，和一定的弹性，并有效第保持钢轨与轨枕之间的可靠联结。