下面的代码本质上是由先前所有的代码示例组合而成的一个可运行程序。

The following code essentially combines all our prior code examples into one runnable program.

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事实上，一些在未饮酒者身上显现的引起死亡的不利因素是由先前的饮酒问题或是已存在的健康问题所造成的。

Indeed, some of the mortality disadvantage seen in nondrinkers is explained by prior problem drinking, or established health problems.

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先前的互联网只不过是一堆网络上的页面，但现在的互联网，正在变成一个由互相联系的人组成的大网。

Previously the Internet was just a bunch of web pages, but now it's becoming a web of interconnected people.

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