Extract uppercase words from a file, extract unique words.

找出一个文件中的大写字母，或者唯一指定字符。

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Its appearance is not only for people living environment more perfect, also records the city unique words.

它的出现不仅仅是为了人们生活环境更完美，也记录着这座城市独特的言语。

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Suppose we have some ASCII text that we wish to analyse, a first step in this might be to count the total words and then count the number of unique words.

假如我们有一些希望进行分析的ascii文本，首先要计算单词总数，然后计算唯一单词(即只出现一次的单词)的数量。

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Still, nuclear words evoke unique fears.

FORBES: Post Fukushima-- burn more coal and oil, and hire more engineers not regulators

Like "Hugo, " it features Selznick's unique storytelling style of mixing words with richly drawn black and white pictures.

CNN: 'Hugo' author's latest leaves readers 'Wonderstruck'

In other words, even with a unique ownership structure, leadership still matters.

FORBES: Why Newsrooms Pray To St. Petersburg