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- It was patently obvious that he was lying. 显然他在撒谎。
- 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。
- He got a patent for this invention. 他获得了这项发明的专利权。
- 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。
- The patent runs out in three years time. 这项专利期限为3年。
- She handled a difficult argument skilfully. 她巧妙地应付了一场艰难的辩论。
- Did you take out a patent on your design? 你是否取得一项设计的专利?
- 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。
- Infringe a contract; infringe a patent. 违反一项合同; 侵犯专利权
- 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 patent office needs90 days to wait for any possible opposition. 专利局需要90天的时间等候任何可能产生的反对意见。
- The past month has been a difficult one for him. 上个月他很困难。