求翻译：facebook在中国暂时还禁止使用，因为它没有在中国开通，所以我无法开通。由于我是在国家机关单位工作，上班时间电脑是禁止浏览外界互联网信息及其它用途。所以我暂时仅能用邮件和你聊天。是什么意思？

Facebook in China temporarily banned, because it does not open in China, so I could not be opened. As I was working in State organs and units, working time computer browsing is prohibited outside information and other uses of the Internet. So I'm temporarily only with mail and chat to you.