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。

youdao

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。

youdao

We see Albert being hit on the head by another boy from behind with a long wooden board later identified by authorities as a splintered railroad tie.

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