A boy who's bullied by his father may hate his father and want to hurt him but since this would--this is very shameful and difficult.

屈于父亲权威下的男孩,可能会憎恨他的父亲，想要伤害父亲,但这个想法是可耻的，也是难以实现的。

耶鲁公开课 - 心理学导论课程节选

But through technique alone to the extensity even existence cannot be found alone There isn't any or many or much meaning maybe limited cases I don't care.

当时仅仅通过技术,连存在都难以实现,如果这样,有技术也没有什么意义了,或许我举的例子不多。

麻省理工公开课 - 电影哲学课程节选

Egypt being the best example, so that no longer was war possible, but the flip side of that is, there was also another thing that was impossible -- freedom.

埃及就是最好的例证,所以当和平年代到来时,其对立面必然显现,即总有另一件事物,变得难以实现,那就是自由

耶鲁公开课 - 古希腊历史简介课程节选