It is difficult to draw any reliable conclusions from an early phase study such as this, but we are encouraged to see early signs of activity.

他接着说道：“我们很难从早期的研究中得到可靠的结论，但我们很高兴地看到这些早期征象。

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NH groups Orient too when draw ratio is beyond 80%, which indicates that it is easy for soft segments but difficult for hard segments to Orient under the effect of outside force.

当拉伸倍率大于80 %时，NH基团也发生取向，即在外力作用下，软链段较易取向，而硬链段的取向较难。

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Chinese popular literature has the largest readership, but it is difficult for us to define it as a refined art and even more difficult to draw critics' attention.

中国通俗文学拥有最广大的读者群，却一直难登文学的大雅之堂，更难被批评家所关注。

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You put a child on one side of the mountains and you ask him to draw it, and a four- or five-year-old can do it easily, but then you ask him to draw it as it would appear from the other side and children find this extraordinarily difficult.

你让孩子在模型的一边,要求他把自己看到的三山模型画出来,四五岁的儿童便能够轻易做到,但是,如果你要求儿童画出,从模型另一边看过去的样子,儿童就会觉得非常困难

耶鲁公开课 - 心理学导论课程节选

"After a great deal of soul searching I have come to the difficult decision that I have no choice but to draw a close to the current production of my first play, " Davidson wrote.

BBC: Jim Davidson cancels theatre tour

But his song got lost - mainly because of the draw as he sang first, but it was also difficult for him to do.

BBC: Bonnie Tyler Eurovision entry: two reactions