Furthermore, the training process itself happens on a rich, carefully selected set of challenging levels.

深入一些讲，训练过程本身是在一个丰富的、经过精心选择的挑战等级上进行的。

We have to make sure that it isn't hoarded only in wealthy countries or in a select set of countries.

我们必须确保它不仅仅在富裕国家或特定国家中被囤积。

As a film writer, you're a curator for our audience, really, and when you see a festival's catalog, how do you go about selecting a set that you want to tell people about?

作为一名电影编剧，您实际上是我们观众的策展人，当您看到电影节的目录时，您如何选择您想要向人们介绍的场景？