communication
n.
表达;交流;交际;传递;通信;交通联系;信息;书信;电话
例句：
The ambassador has brought with him a communication from the President.
communications
n.
表达;交流;交际;传递;通信;交通联系;信息;书信;电话
从单词a可以看出，后者是前者的复数形式。
communication
n.
表达;交流;交际;传递;通信;交通联系;信息;书信;电话
例句：
The ambassador has brought with him a communication from the President.
communications
n.
表达;交流;交际;传递;通信;交通联系;信息;书信;电话
从单词a可以看出，后者是前者的复数形式。
