His mother heard the news from the toll line.

他的母亲从长途电话线得知这个消息。

The larger corporation built toll lines, connected these smaller systems with one another, and thus made it possible for Washington to talk to New York, New York to Chicago, and ultimately — Boston to San Francisco.

较大的公司建造了收费线路，将这些较小的系统相互连接起来，从而使华盛顿与纽约、纽约与芝加哥以及最终与波士顿与旧金山的通话成为可能。