I already used this technique above in the split call, which matched the null string (it matches everywhere, so all the characters in the matched string are returned individually).

在split调用中我们就已经使用了这种技术，它可以匹配空字符串(它可以匹配任何地方，因此所匹配的字符串中的所有字符都会一个一个地返回)。

youdao

One, which I'll call Project Split—the testing and development teams did not work well together.

我称其中一个为“分离项目组”——开发人员组和测试人员组很难共事。

youdao

When you split a uranium 235 atom you will create what we call fission fragments.

当你们将铀235原子分离的时候,你会创造出我们称为裂变碎片的。

youdao

I was one of those kids, and I remember rather vividly walking through the hall way of my high school having people split me, call me names, threaten to beat me up.

我还清楚地记得有这么一个孩子,穿过我所在的高中的大厅,让周围的人朝我吐痰，骂脏话，威胁着要把我狠狠打一顿。

麻省理工公开课 - 媒体、教育、市场课程节选

And that the fact that it split into two was telling them that there must be some new property to the electron, and what we call that now is either being spin up or spin down.

它能一分为二的,事实告诉我们,电子一定有某种新的性质，我们叫它自旋向上或者自旋向下。

麻省理工公开课 - 化学原理课程节选

Several spring demonstrations flopped, and union leaders are split over whether to call any more.

ECONOMIST: France returns to work

Thanks to technology, sports fans have the luxury of second and third guessing umpires who have a split second to make a call.

FORBES: The Plight of The Umpires And The Inevitability Of Instant Replay

Would Jamie Dimon be able to simply split off his investment bank, call it J.

FORBES: Calls To Break Up The Banks? All Talk, No Action