communication可数吗l

例句：

Snow has prevented communication with the outside world for three days.

大雪使得与外界的通信联系中断了三天。

Speech is the fastest method of communication between people.

说话是人与人之间交流最快捷的方法。

Good communication is key to our success.

良好的沟通是我们成功的.关键。

Doctors do not always have good communication skills.

医生不一定都具备良好的交际能力。

Television is the modern medium of communication.

电视是现代传媒。