1. The railroad tie was rotting and needed to be replaced.
那根铁路枕木正在腐烂，需要更换。

2. Workers are laying new railroad ties along the track.
工人们正在铁轨旁铺设新的铁路枕木。

A: Why is the train track unstable?
A：为什么铁轨不稳定？

B: One of the railroad ties might be cracked.
B：其中一个铁路枕木可能裂开了。

1) 铺设在铁轨下的支撑构件

2) 铁路基础设施的核心组件

3) 常见的材质包括木头和混凝土

1. 铁路枕木

e.g. The tracks are supported by wooden railroad ties.
铁轨由木制铁路枕木支撑。

noun

1. A heavy piece of wood or concrete that is laid across the tracks to support the rails.