He says knowing how to do this may be especially valuable if fossil fuel should become unavailable.

VOA: special.2009.04.14

I think that what you have to do as a young person is develop your human capital and that means knowing how to do things.

我认为作为一个年轻人 你们应该做的,是发展你们的人力资本,而这意味着你们要知道怎样做事情

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