使用的CSS有助于保持你的内容和设计分开，让您灵活和适应性强的网页为差不多任何语言你能想到的。
Using CSS helps keep your content and design separate, giving you flexible and adaptable web pages for just about any language you can think of.
实践证明，本系统具有软硬件成本较低、灵活性和适应性强、网络资源利用率高等特点，较好的满足了实时教学的需要。
Practice has proved that there are many merits of the system, such as: low cost, flexibility and efficient, it can meet the basic requirements of real-time teaching.
实践证明，本系统具有软硬件成本较低、灵活性和适应性强、网络资源利用率高等特点，较好的满足了实时教学的需要。
Practice has proved that there are many merits of the system, such as: low cost, flexibility and efficient, it can meet the basic requirements of real-time teaching.
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