additional marshalling yard的用法和样例：
- He is a technician in the marshalling yard.
- Are all the loaded vans on the marshalling yard?
- Are all the loaded vans available on the marshalling yard?
- Meihekou Station is one of the 48 one of the marshalling yard, on the passenger and freight trains to 159.
- Police officers from Chengdu East Station patrolling at the marshalling yard to safeguard the relief material train.