Communications are the systems and processes that are used to communicate or broadcast information, especially by means of electricity or radio waves. 通信
noun [专属名词] 传播学；通讯，交通联系；信息，书信，电话（communication 的复数）
The rocket launched two communications satellites. 火箭发射了两颗通信卫星。
- communications 出现在下面的课文中（提供视频、音频及笔记等可系统性学习）
- Lesson 29 The hovercraft
