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1·Another more important advantage of indoor activities, I think, is that they can greatly help open one's mind and make one intelligent.

我认为，户内活动另外一个更重要的优势就是他们能够极大地帮助我们开心智、使我们变得聪明。

2·Collaboration must be intelligently created and fostered, not merely hoped for, and it requires fearlessness to be open to others and to speak one's own mind.

合作必须明智地创造和培养，它不仅期待，而且要求大胆地向别人敞开胸怀表达自己的思想。

3·Li: Yes, but to open up one's mind, one needs to prepare.

李：是的，但思想开阔也需要有所准备。