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- It must be difficult to play various personae in the same movie. 在同一个电影中扮演不同的角色肯定不容易。
- Navigation is difficult on this river because of the hidden rocks. 因为河上有暗礁，所以在这条河上航行很困难。
- It was difficult to tell his exact age. 很难判断他到底多大岁数。
- It is difficult to express it in terms of science. 要用科学的字眼来表达它是很困难的。
- It was difficult to gauge how people would respond. 大家的反应如何难以估计。
- She handled a difficult argument skilfully. 她巧妙地应付了一场艰难的辩论。
- He find it difficult to give shape to his idea. 他觉得很难把他的想法，明确表达出来。
- It is difficult to decide between the two opinions. 在这两种意见之间抉择是困难的。
- It is difficult to keep on terms with such a man. 很难和这样的人保持友好关系。
- It is difficult to stamp out all the crimes. 很难把所有的犯罪都消除掉。
- It's difficult raising a family on a small income. 依靠微薄的收入是很难养家的。
- He is unable to do such a difficult job now. 他现在还不能做这样困难的工作。
- She can play the most difficult piano music by ear. 她能不看乐谱，光凭听觉记忆弹奏最难的钢琴曲。
- The past month has been a difficult one for him. 上个月他很困难。
- The stain on his shirt is difficult to clean off. 他衬衣上的污点很难去除掉。
- Abnormal suppression or absence of menstruation. 不正常经闭，无月经
- She fended off the difficult questions skilfully. 她巧妙地避开了那些不好回答的问题。
- An instance or occurrence of menstruation. 经期月经的例子或出现
- It was difficult to clamber the mountain. 爬上那座大山是困难的。
- How about your menstruation cycles? 你的经期准吗?
