求翻译：电话通信是通过声能与电能相互转换、并利用“电”这个媒介来传输语言的一种通信技术。两个用户要进行通信，最简单的形式就是将两部电话机用一对线路连接起来。是什么意思？

Telephone communication is through sound energy and energy conversion and use of "power" language of the medium to transmit a communication technology. Two users to communicate, is the simplest form with a pair of two phone lines connected.

telephone communication is through sound energy and electric energy mutual conversion, and use the "electricity" language of the media to transmit a communication technology. Two users to communicate, is the simplest form of the two telephone lines to connect with one.

Telephone communication is through sound energy and power conversion, and use "electricity" the language medium for transmission of a communication technology. Two users to communicate, the simplest form is two telephones with a pair of lines connected.