Key and difficult points
难点───difficulty;重───heavy
you have difficulty getting up?───你起床有困难吗?
Teenagers often have difficulty expressing themselves.───十来岁的孩子在表达思想方面常常有困难。
They discussed the difficulty of studying abroad.───他们讨论了到国外学习的困难。
One of the immediate impacts of these discoveries was the conceptual difficulty inherent in adopting a dual model.───这一发现的直接影响之一是由二元模型固有的概念性困难所造成的。
But, she notes, he might have sympathised with her over one big problem: the surprising difficulty of changing medical routine.───然而,她说过,Semmelweis在这个大问题看法应该和她一样:要改变医药程序得面临着惊人的困难。
It looks like they've at least managed to make it through the year, cushioning themselves with a lot of pain, and difficulty.───看起来非洲各国至少用这笔钱度过了过去的一年,艰难困苦因此而大为缓解。