我曾撰文谈到过一系列与学习有关的习惯，但有一个方面是从来没有涉及到的，这就是集中注意力的问题，个中原因可能是本人觉得这是最难于养成的习惯之一吧。
I've written about a range of habits related to learning, but one I have not yet covered is concentration - perhaps because I find it among the hardest of habits to truly master.
几个月前我曾就苹果(Apple)的环境政策撰文，该文刊载于Macworld杂志，其中一段引述如下。
A quote from a Macworld article I wrote a few months ago on Apple's environmental policies.
这一次，我是为了生命撰文，这些逝去的生命在过去十年的大部分时间里，曾或多或少的使我感知周围世界的方式发生了极大——或许是根本性——的改变。
Doing this for a living, on and off, for the better part of a decade, has greatly-perhaps fundamentally-changed how I perceive the world around me.
马克·吐温(Mark Twain)就撰文讽刺过他——也许写的不是那么公平，说他曾驾着辆精致的四轮马车行像割草一样把行人撞倒一大片(见《没关系，我付罚款》一文)。
Mark Twain lampooned him, possibly unfairly, for mowing down pedestrians in his fine horse-drawn carriage. (" No matter, I'll pay for them. ").
三名撰文者在已发现的文件中，没有证据表明英美烟草公司确曾采用这种方法对其香烟进行了再设计，而且该公司也否认这样做过。
None of the documents discovered by the three researchers shows that BAT actually did redesign its cigarettes in this way, and the firm denies that it did.
杂志《国家》曾因费城球迷在球赛时突然集体大声高唱美国国歌而撰文指责。
The magazine The Nation scolds baseball fans for breaking into chants of USA during a Phillies ballgame.
杂志《国家》曾因费城球迷在球赛时突然集体大声高唱美国国歌而撰文指责。
The magazine The Nation scolds baseball fans for breaking into chants of USA during a Phillies ballgame.
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