有困难的

In particular, the solution semiflows are not usually compact when the nonlocal term is incorporating into the equations.

因此，对此类问题的研究既有重要的理论和实际意义，也在数学上具有挑战意义的困难。

The goal of the supporting agencies is the praisable one of supporting"good"as opposed to"bad"science,but a valid determination is difficult to make.

然而要做出正确的抉择却是困难的。人们往往将好科学与该科学是否有能力提出一套完美的理论混淆起来。

The goal of the supporting agencies is the praisable one of supportinggoodas opposed tobadscience,but a valid determination is difficult to make.

然而要做出正确的抉择却是困难的。人们往往将好科学与该科学是否有能力提出一套完美的理论混淆起来。

The complexity of the distribution of Purkinje fibers has led to great difficulty in ECG simulation research.

由于Purkinje纤维在心室内膜上分布的复杂性，给心电仿真的研究带来很大的困难，本文对此进行了很有意义的探索，即不仅把心肌单元按动作电位分类，又将其按传导速度分类。

Since it has not much been used in clinic, and never used in China, to investigate its application for cataract extraction surgery, this study use Erbium: YAG laser for continual circular capsulorhexis on patients of senile mature white cataract, hyper-mature cataract or miotic pupil cataract with posterior synechia, which are difficult for capsulorhexis.

由于迄今临床应用甚少，国内尚未开展此项技术，因此本研究利用Er：YAG激光对采用常规手法撕囊困难的老年性成熟期的白色白内障、过熟期白内障及有虹膜后粘连的小瞳孔老年性白内障患者进行连续环形撕囊，来探讨其在白内障摘除术中的应用。

"Today was a very hard race because this track is slow and twisty and you have to use all the strength in your body to ride at the maximum," he said.

他赛后说：&今天是一场困难的比赛因为赛道很慢并且有连续不断的弯角，你必须使用你身体最大的能量来驾驶&。

This is my company and my dream job, but i have a hard time making it work ..

这是我的公司和的我的梦想工作，但我有困难时期做它工作。

Although there are many difficulties in her life,she faces all of them with a light heart.

虽然在她的生命中有许多的困难，她依然以轻松的心态面对。

I left the season with a great deal of satisfaction in my turnaround and my ability to fight through anything.

我觉得这个赛季是如此的令人满意，巨大的转变也证明我有足够的能力和任何困难作战。

She attends a special school for children with learning difficulties.

她上的是一所为有学习困难的儿童开办的特殊学校。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。