The time when I first met Nelson Mandela, was a very difficult period of my life.

第一次见到纳尔逊·曼德拉的时候是在我一生中非常艰难的时期。

youdao

This period of cultural adjustment can be very difficult and lead to pulling away from the new culture.

这一时期的调整文化是很困难的，并导致补上的新文化。

youdao

The time when I first met Nelson Mandela was a very difficult period of my life.

第一次见到纳尔逊·曼德拉的时候是在我一生中非常艰难的时期。

youdao

Now,that has changed, for sure; but,the centralization of the French government and the domination of Paris over the life of the nation is very difficult to change, over a long period of time.

现在,情况已经发生了改变,但是法国政府的中央集权化,以及巴黎在国民生活中的支配地位,在相当时间段内,都很难得以改变

耶鲁公开课 - 1871年后的法国课程节选

On the other hand, that explosion of paparazzi flashbulbs and television cameras reminds one not just of the inevitable public interest but also that the adjustment period after a prison sentence is very difficult.

BBC: Breakfast with Frost

And obviously we've just gone through a very difficult period -- the whole world has.

WHITEHOUSE: Diplomatic Reception Room

"The library is one of our most treasured national institutions and I would like to assure the library of my ongoing support through this very difficult period, " he said.

BBC: National Library of Wales reopens to the public after fire