Useful if you know a problem exists in that function.

有用的，如果你知道问题存在于这一职能。

youdao

Know a problem exists, willing to try to solve it, but misunderstand the problem to solve.

知道存在问题，也愿意设法解决它，但误解了要解决的问题。

youdao

That's not a problem. It's simply a matter of letting people know in time.

这没问题。不就是及时通知大家么。

《牛津词典》

In many cases, people do not want others to know they have a problem.

VOA: special.2010.04.13

And, we knew that if we know the crystal structure we can get the Madelung constant, not a problem.

我们都知道只要有了晶体结构,就能知道马德隆常数。

麻省理工公开课 - 固态化学导论课程节选

And so this is not like a math problem set or a physics problem set. Or, like a high school physics lab, where we all know what the answer should be, and you could fake your lab results anyway.

或是物理问题集合,又或者是高中的物理实验室，我们对这些问题都有确切的答案，或者你可以把你的实验结果改成正确的，有些事情是不能明确界定的。

麻省理工公开课 - 计算机科学及编程导论课程节选

When its smartphone badges practically demand a pause for breath, you know there's a problem.

ENGADGET: Verizon's HTC DLX may be called Droid DNA, Windows Phone 8 devices get tentative prices

It's easy to find isolated cases, but hard to know how often a problem is occurring.

FORBES: Face Of The Year: David Graham

When I see the fishing guide's horse without the fishing guide, I know we have a problem.

FORBES: Magazine Article