The path is not complete until its two terminals are joined.
直到两个端点接在一起，电路才是完整的。
One or more message segments transmitted among terminals, application programs, and systems.
在各终端、各应用程序和各系统之间传输的一个或多个信息段。
A large, powerful computer, often serving several connected terminals.
主计算机大型的、强大的计算机，经常用作一些相互连接的终端服务器
