"Many mothers deliver at home in sub-Saharan Africa and it's very difficult for them to get to a hospital or clinic which may be miles away in that time period.

VOA: special.2010.05.24

These are difficult lines physically to read, and they may very well be the most painful lines in the entire poem from an emotional perspective.

从情感的角度看待整首诗，这几行比较难懂,读起来也比较费力。

耶鲁公开课 - 弥尔顿课程节选

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

You know, right now, it may seem very difficult and a long way off.

CNN: Giuliani: 'Thank God that George Bush is our president'

But that may prove very difficult with serious federal charges against their most outspoken and visible leader and an election year just around the corner.

NPR: DeLay Maintains Innocence, Calls Charge a 'Sham'

What I've said is that politicians will bear into account that they want people to study the issues because elections are deeply important and they will bear in account parts of the country where getting to a booth may be very difficult indeed.

BBC: News Online