To determine the catenary curves of arches, he would tack a sketch of a foundation plan on the ceiling, hang loops of string, and attach weights along the loops in proportion to down forces.

为了确定拱顶的链状曲线，他会用大头针将基座草稿钉到天花板上，吊上几圈绳子，在绳子上加重，与向下的力相符。

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Clicking the button displays a calendar in a drop down menu, and selecting a date using the mouse enters the corresponding string into the text input field.

点击那个按钮，会在下拉菜单中显示一个日历，然后使用鼠标选择日期，相应的字符串就会输入到本文输入域中。

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When a user selects a date from the drop down menu, it has to be formatted into the corresponding string, requiring the opposite lookup, namely the acronym given the index.

当用户从下拉菜单中选择了一个日期后，它必须被格式化为相应的字符串，需要进行反向查找，也就是根据索引查找缩写。

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And it boils down to modifying the format string with just a simple number.

它归结于是用一个简单的数字来,修改字符串的格式。

哈佛公开课 - 计算机科学课程节选

I just doubled the indentation each time so you can see it. So each successive call, notice what's happening. The argument is getting reduced. And we're going another level in. When we get down to this point, we're calling it with just a string of length one.

因此每次成功调用注意它的过程,我们的命题不断简化，而且我们不断深入嵌套,当我们走到这一步的时候,我们就是在调用它处理，仅有一个元素的字符串了。

麻省理工公开课 - 计算机科学及编程导论课程节选

After the scandal, Murdoch stepped down from a string of company directorships and abandoned a multibillion-dollar bid to acquire satellite broadcaster BSkyB.

CNN: Trial date set for Brooks, Coulson in phone hacking case

The charging announcement delivers one more public relations blow to Murdoch, who last week stepped down from a string of company boards of directors and further distanced himself from the print business that first brought him fame and fortune.

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The charging announcement delivers one more public relations blow to Murdoch, who stepped down from a string of company boards of directors earlier this month and further distanced himself from the print business that first brought him fame and fortune.

CNN: Reporter on Murdoch's Sun arrested over stolen phones