A basic unit used to record system activity. The acceptance by a system of a line of input from a terminal, processing of the line, and a return of data, if any, to the terminal.是什么意思_A basic unit used to record system activity. The acceptance by a system of a line of input from a terminal, processing of the line, and a return of data, if any, to the terminal.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句