例句與造句

1. In the case of a rail line in the US, the owner of the property is said to retain a " residual common carrier obligation ", unless otherwise transferred ( such as in the case of a commuter rail system, where the authority operating passenger trains may acquire the property but not this obligation from the former owner ), and must operate the line if service is terminated.
2. It's difficult to find residual common carrier obligation in a sentence. 用residual common carrier obligation造句挺難的