model railway

例句：

1. 1. This is agreat model railway for children to learn aboutengineering.
   这是一个非常适合儿童学习工程学的模型铁路。
2. 2.The museum has a large collection of modelrailways for visitors to explore.
   这个博物馆有大量的模型铁路供游客探索。
3. 3. The engineer designedthis model railway to demonstrate the principles ofmotion and control.
   这位工程师设计了这个模型铁路，以展示运动和控制的原理。