communicate可數(shù)嗎

　　There was a tremendous lack of communication between us.

　　我們之間極其缺乏溝通。

　　Negotiators say they're keeping communication lines open.

　　談判代表聲稱他們保持著溝通管道的通暢。

　　Lithuania hasn't had any direct communication with Moscow.

　　立陶宛與莫斯科還沒有任何直接的交流。