Since a function call is usually just a part of an XPath expression, an unknown function causes the execution of the entire XPath expression to fail.

由于函数调用通常仅仅是 XPath 表达式的一部分，未知的函数会造成整个 XPath 表达式的执行失败。

youdao

If you can't read Japanese this can often be the most entertaining part of the lavatory experience, with each button press leading to some new, unknown function of the lavatory.

如果你不认识日语，那么这个面板就是你如厕体验中最有意思的部分——每按一个按钮，就能看到一个洗手间的新功能。

youdao

The unknown function F can be easily identified like the identification of Lagrange multipliers.

而待定函数F的识别类似于拉氏乘子的识别。

youdao

The technique found genetic mutations known to cause intellectual disability in 16 patients, and genes of unknown function that appear to be the cause in another 22 patients.

FORBES: DNA Sequencing: Is Science Fiction Becoming Medical Fact?

Much as Coca-Cola's success results from soft-drink recipes unknown to its competitors, the success of investors is almost by definition a function of their individual analysis, which, if superior to that of competitors, allows them to outperform.

FORBES: Magazine Article

Coca-Cola ( KO - news - people )'s success results from soft-drink recipes unknown to its competitors, the success of investors is almost by definition a function of their individual analysis, which, if superior to that of competitors, allows them to outperform.

FORBES: Political Economy