关键问题在于我们生活在一个物理的世界里，我们的娱乐产品直到不久以前，也是以实物为媒介的。
The main problem, if that's the word, is that we live in the physical world and, until recently, most of our entertainment media did, too.
接下来的两章我们将提供两种实用有效的方法帮助理解数字时代媒介的全貌及其在日常生活中的应用。
The next two chapters will offer practical and effective ways to understand the digital media landscape and to apply that understanding in our daily lives.
网络作为继报纸、广播和电视之后新兴的第四大媒介，越来越深入我们的生活。
As the fourth new media after newspaper, broadcast and television, network is more and more deeply connected with our life.
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