例句與造句

1. Orden ( 1956 ) had suggested the use of conservation equations when networks involved intermediate modes; flows from raw material sources through manufacturing plants to market were treated by Beckmann and Marschak ( 1955 ) and Goldman ( 1958 ) had treated commodity flows and the management of empty vehicles.
2. It's difficult to find intermediate mode in a sentence. 用intermediate mode造句挺難的