UNICEF's Lake said even in Senegal, where the number of public schools has doubled in the last decade, there is still work to be done to achieve gender equality in schools.

VOA: standard.2010.05.19

And the reason I want to show you this is to notice that the recursion can be doubled.

如果我来写斐波那契数列你可以看看这儿,原因是我想让你看看这部分的递归可以翻倍。

麻省理工公开课 - 计算机科学及编程导论课程节选

So NewsCorp, whose price doubled when The Wall Street Journal's fell in half, eats up and The Wall Street Journal is gobbled up by the bigger company.

当新闻集团的股价翻倍时,《华尔街日报》的股价却减半,因而《华尔街日报》被报业大鳄吞并

耶鲁公开课 - 金融市场课程节选

What we see here is a doubled voice.

在这里，陈述的声音开始分裂成。

耶鲁公开课 - 1945年后的美国小说课程节选