This USES the regular expression module (re) to create a compiled regular expression from the regular expression the user enters in line 8.

它使用正则表达式模块(re)，由用户在第8行输入的正则表达式创建已编译的正则表达式。

youdao

The regmatch(re, text) function compares the regular expression to the text, yielding either Null for no matches or an array of pairs of integers (a two-element array).

regmatch(re, text) 函数将比较正则表达式和文本，如果没有匹配的话就生成 Null 值，否则生成一个由成对整数组成的数组（双元素数组）。

youdao

If you re-write this expression in terms of, let's just say, move this over to one side, you'll have the following expression.

如果你们再写下这个表达式，假如说，将这个移动到一边，你会得到接下来的表达式。

youdao

In the past, this expression was used as an argument to re-elect a president, especially during a time when the country was at war.

VOA: special.2009.07.12

So problems arise but they're interesting problems, and they are a function, one of the six functions, of the expression "It is raining."

问题就出现在这里，但这是有趣的问题,是六功能中的一个“

耶鲁公开课 - 文学理论导论课程节选

But we get tired of saying that long expression, so we're going to call that a Newton, right?

但我们不想说得这么复杂,所以把这个单位称为"牛顿",对吧

耶鲁公开课 - 基础物理课程节选

In fact, Mr Goldhagen also cites German re-education, the criminalisation of anti-Semitic expression, Germany's reintegration into Europe and other factors.

ECONOMIST: Hitler��s death camps

George Sr. had an expression that went like this: If you're so damned smart, how come you aren't President of the United States?

CNN: 'I've made mistakes...'

The problem people generally have with discipline in options trading is they're going to get it from both ends, if you pardon the expression.

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