当你的行为过火时问题就出现了。

The problem arises when you go overboard.

youdao

但是当混合使用这些工具时，最困难的问题就出现了。

But the hardest part comes when they have to be mixed.

youdao

在您希望将数据移出程序时，数据可移植性问题就出现了。

Data portability is what comes up when you want to move data outside your program.

youdao

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

So, this raises kind of an interesting question in terms of what the difference is between these two cases, and we're talking about numbers of energy.

那么，到这里就出现了一个很有意思的问题,那就是下面这两种情况的区别在哪里？,当然我们关心的是能量的多少。

麻省理工公开课 - 化学原理课程节选

Now when I take it seriously, there is a problem here because sometimes research doesn't deliver good news.

但当我认真对待这事，就出现了一个问题,有时研究所得并不一定是好消息。

哈佛公开课 - 幸福课课程节选