名词

1. (尤指依靠电或无线电波的)通信系统，通信
Communications are the systems and processes that are used to communicate or broadcast information, especially by means of electricity or radio waves.

2. 消息;信息
A communication is a message.

3. see also: communicate

1. something that is communicated by or to or between people or groups

2. the activity of communicating
the activity of conveying information

e.g. they could not act without official communication from Moscow

Synonym: communicating

3. a connection allowing access between persons or places

e.g. how many lines of communication can there be among four people?
a secret passageway provided communication between the two rooms