He says those questions became even more difficult to answer after the 9/11 attacks by a group of Sunni Arab terrorists that killed 3,000 people on American soil, and after the massive U.S.military deployments in Afghanistan and Iraq.

VOA: standard.2010.03.18

So that's really - these are really difficult questions to answer.

所以这些问题,这些问题都是极难处理的

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Freud's--Freud was very focused on the family life of the people he interacted with, which is rather upper class Europeans, and these sort of questions would have been difficult for Freud to answer.

弗洛伊德非常关注,与他接触之人的家庭生活，也就是一些欧洲的贵族们，对于这类问题,相信弗洛伊德本人也很难作答。

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