英文: A correspondence respondence school receives a great deal of correspondence.
中文: 函授学校收到一大笔书信。英文: He's still in correspondence with her.
中文: 他仍然跟她在通信。英文: I've fallen behind with my correspondence.
中文: 我积压了许多信没回.英文: They kept up a regular correspondence.
中文: 他们维持经常的通信。英文: Historically, distance education meant correspondence study.
中文: 从发展历史而言,远程教育意味着函授学习。