难以

But their applications were limited at low frequency. They are always of no effect at high frequency because the high mode denseness and complex boundary condition.

但是其应用限于低频，高频下由于复杂系统的模态密集，边界条件等参数难以确定，因而该方法适用性差。

It's hard to depersonalize these things," says NAHB CEO Jerry Howard."It's hard to step back.

NAHB的首席执行官杰里·霍华德说："这种事很容易伤感情，一旦伤了，就难以挽回。"

Societies vehemently opposed to such a depopulation program, that is

至于他是一个强烈反对这样的销毁计划中秘密会社的发言人，这是难以核实。

Cleopatra Cleopatra with an irresistible beauty and deportment of the 10,000 kinds of customs.

埃及艳后克利奥帕特拉有着令人难以抗拒的美貌和风情万种的仪态。

Unfortunately, that may well prove temporary: first, your stimulus programme, with its reliance on massive credit expansion, may prove unsustainable; second, the decline in China's trade surplus is largely the result of the crisis-induced collapse in world trade; and, third and most important, China has embarked on currency deprecation by locking the renminbi to the falling dollar.

不幸的是，这种缩减很可能只是暂时的：首先，贵国的刺激方案依赖于大规模信贷扩张，可能难以维续；其次，中国贸易顺差的减少，主要是金融危机导致的世界贸易萎缩的结果；最后一点，也是最重要的一点，由于钉住了不断贬值的美元，人民币也在贬值。

There is nothing, and I mean nothing in this world, more difficult and depressing than pregnancy.

没有什么，我没有什么意义，在这个世界上，更难以压抑比怀孕。

Experimental study of depressurization and augmented injection with surfactant of low concentration is carried out in several low permeability oilfields.

在绝对渗透率难以改变的客观条件下，通过改变油、水及岩石间的界面张力，从而改善油、水渗流性，提高水相渗透率，降低低渗透油层注入压力，并在一些低渗透油田开展了低浓度活性剂降压增注试验研究，取得了一定的效果。

Based on ZHANG Ji-sheng,ZHAO Yan-chun and WANG Wen-bin,the author of this paper will discuss infixation with regard to its nature and function from the perspective of continuum,shows that infixation is inflectional with syntactic functions,which,in the meantime,also tends to be derivational.

在张吉生、赵彦春和王文斌的基础上从连续体的角度来讨论中缀的性质和功能问题，认为中缀是屈折形式，完成的是语法功能，但同时也有向派生词缀过渡的性质，因此，仅从派生词缀的角度来讨论，难以弄清其实质。

Results Out of 26 cases, 24 cases were performed with expectant treatment. Blood glucose was controlled well, foot ulcus was healed and discharged. Other 2 cases were cured with dermatoplasty and discharged.

结果 26例中24例经保守治疗，血糖控制良好，足部溃疡愈合而出院，2例溃疡难以愈合而经手术植皮治疗愈合出院。

The trauma it caused to the Chinese people was beyond description .

给中国人民心灵造成的创伤难以用语言来形容。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。