也就是说，如果你可以解出来或者去除掉这些变量的点，就是临界点，当你有这样的问题要解决的时候，我们找到临界点了，它们一定是最大值点或者最小值点吗？

That means if you were able to solve and eliminate the variable that would be a critical point. When you have the same problem, as we have critical points, are they maxima or minima?

youdao

我们所面对的最大的问题，就是对修改和新增内容的测试和验证花去了大量的时间。

The biggest issue for us is simply the amount of time it takes to test and verify changes and additions to the framework.

youdao

最大的问题就是教育，我们需要从小学一年级或幼儿园开始就教他们如何写作。

There are no other problems, it's education.We need to start teaching kids from the first grade and kindergarten how to write.

youdao