这里可以即时语音聊天吗 为什么即时聊天是灰色的不可用呢？

I hope have more friends This is my first time to find this net.I think it's very good for studing.I only use easy English .My education is the university,but I almost foregt English.I hope more friends can teach me .While I can teach you Chinese.Let's help each other.