可是，另一方面，用网络通讯有时又让人沮丧。
But then, communicating through the Net can be frustrating at times.
有许多文章，提供了大量的通讯录内容，你可以用。
There are many article directories that offer a lot of content that you can use.
用保守设施无法控制他们自在通讯。
You cannot control their free communics in a conventioning way.
内部通讯——紧急情况时用。
内部通讯——紧急情况时用。
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