And Howard Russell, an insect expert at Michigan State University, says once they get to the marching point, they are difficult to stop.

VOA: special.2009.01.27

This makes it difficult you could say and this is Aristotle's point I think this makes it difficult for the philosopher to be a good citizen of any actual regime.

可以这么说，这让它变得很难搞,而这也是亚里士多德的重点,我认为这让哲学家很难成为好公民,无论身处那一种现行政体中。

耶鲁公开课 - 政治哲学导论课程节选

"This is the starting point. Unless there is an end, a real cessation from these activities, it will be difficult for any Palestinian negotiator to come back to the table.

VOA: standard.2009.04.09