It has been estimated that one of six American couples will face difficulty getting pregnant.

An overcome difficulty is a turning point in success.

重复的契机就是困难被克服。

A man is born to overcome difficulty!

一个男人天生就是去战胜困难的！

Keeping the Excellent Spirit Status of Leading Team is the Magic Key to Overcome Difficulty and Gain Victory for Enterprises in Difficult Position

保持领导班子良好的精神状态是困难企业克难制胜的法宝

To overcome difficulty of high computational cost in difference sensitivity analysis, efficient derivatives are obtained using approximate-difference strategy based on combined approximations.

基于谐响应组合近似重分析方法，提出了近似-差分敏度求解策略。

CIS means Corporate Identity Strategy, publishing press in higher education institutions must use CIS in order to overcome difficulty and deal with challenge.

CIS，意为企业形象战略或企业形象识别系统。高校出版社欲摆脱困境与迎接挑战，就必须导入CIS战略。

In order to overcome difficulty of some variables online measurement in industry processes, a inferential estimation strategy based on ANN and nonlinear partial least square is proposed.

针对工业过程中某些变量难于在线测量的问题，提出一种基于人工神经网络（ANN）的非线性部分最小二乘的推断估计策略。

When two dissimilar metals differ greatly in strength, using a pressure maintain cavity is one of the effi-ciency method to overcome difficulty because of the severe plastic deformation.

两种强度相差较大的异种金属进行摩擦焊接时，使用保压腔是克服由于软金属的大量塑性变形而给焊接过程带来困难的有效手段之一。

Learning adaptability is a kind of psychological tendency which a learner overcome difficulty and keep consistent with learning environment and acquire batter learning efficacy.

学习适应性是学习者在学习过程中克服困难与学习环境保持协调一致，从而取得良好学习效能的心理倾向。

The double negative sentences in English is a tremendous difficulty for beginners in their learning of English.

英语中的双重否定句是初学英语者学习句法的难点之一。

Missing each other is the most tremendous difficulty for us both to get over.

对彼此的思念才是我们俩要共同克服的最大困难。

The traditional firing methods with great danger, not only waste ammunition but also have tremendous difficulty to organize and implement.

传统的射击方法不但浪费弹药，还存在着一定的危险性，组织和实施起来比较困难。

This mostly passive learning in a teacher-centered class and the tremendous difficulty in remembering so many English medical terminologies, more often than not, discourage the students from actively learning the English medical terminologies.

这种以教师为中心的被动学习方式和英语医学术语本身构词复杂性在记忆上形成的困难都极大地挫伤了学生学习英语医学术语的积极性。

There are still many problems unresolved in etiopathogenisis, its clinical manifestation is complicated, and there is no specific diagnostic methods, all of these bring tremendous difficulty to early diagnosis and promptly therapy of urinary endometriosis.

在病因和发病机制方面还有许多问题未解决，临床表现复杂多样，无特异性的诊断方法，这些都给泌尿系统子宫内膜异位症的临床早期诊断和及时治疗带来很大困难。

But when an academic community as a whole retains only the striking results, we call it publication bias and we have tremendous difficulty in preventing it. Its impact on our understanding of the truth may be no less serious.

但是当整个学术界只保留引人注目的结果时，我们将其称为出版偏见&这种偏见是很难防范的，但它对我们理解事实真相的严重影响并不因此而减损一分。

Foundation excavation with considerable scale and depth of Oriental Plaza project is of tremendous construction difficulty. Pouring piling was adopted to enclosure structure ( partly with steel of H section);

北京东方广场深基坑工程开挖范围、深度和施工难度大，围护结构采用钻孔灌注桩（局部H形钢桩），锚杆加土钉形成复合支撑；

The article is discussing and analyzing concept change from three aspects that are extreme difficulty, main obstruction and base methods.

论文从观念转变的艰巨性，观念转变的主要障碍和观念转变的基本方法三方面进行讨论和分析。

If we do not have a correct policy now, then extreme difficulty will overtake us.

如果现在没有正确的政策，那末极端的困难还在后头。

However obese women with PCOS often report extreme difficulty in loosing weight and maintaining weight loss.

但是据报道多囊卵巢综合征的肥胖患者总是难以减肥，或减肥后难保持。

When asthma is most severe, the person may have extreme difficulty breathing.

哮喘严重的情况下，人会感到呼吸非常困难。

The extreme difficulty in tracing the manufacturing and distribution channels of SFFC medicines makes their circulation on markets difficult to stop.

由于在追查制造假冒药品及其分销渠道上困难重重，因而难以阻止假冒药品在市场上的流通。