难达到

The level of China's society commercial credit is not high, the bill market growth is not mature, the operation of commercial bank accepts and discount is not standard and the rediscount market is very limited.

我国社会商业信用水平不高，资本市场成长得不够成熟，商业银行的运营难达到标准以及再贴现市场非常有限。

But there is much disturb and cacophony on power line, using commonly communication"s mode is difficult to attain reliability"s demand.

但是由于电力线上的干扰及杂音比较大，采用普通的通信技术很难达到可靠性的要求。

To accomplish this will, it cannot only rely on a simple CAD technology or a simple CAE technology.

但要想实现这一目标，仅仅依靠单一的CAD技术或CAE技术是很难达到预期效果的。

Constructionism theory orders a high level for teaching environment, which, can not be reached by traditional teaching method.

建构主义学习理论对教学环境提出了很高要求，传统的教学技术和手段很难达到。

The idea of such a work ever being staged at Covent Garden, was, of course, always farfetched .

对于这样一个曾经在伦敦中心剧院上演的作品的创意来说，在过去，当然，总是很难达到的。

It's difficult to reach your destination if you don't know where you're going!

如果你不知道要去哪里的话就很难达到你的目标。

This resulted in the present-day term "Shangri-la," which, like El Dorado, signifies an unattainable goal.

这产生了现在的术语"香格里拉"，它像El剑鱼，象征一个难达到的目标。

As a result, a simple control method can not improve the dynamic performance of speed servo system. Integrated the advantages of self-adaptive control, fuzzy control and PID control, an intelligent dual module NC servo controller, called self-adaptive fuzzy PID controller is designed according to the modular design principle.

在光干涉弹流油膜测量系统中，速度伺服系统的控制参数和结构参数是影响速度伺服系统性能的主要因素，且具有时变性和不确定性，采用单一的控制策略很难达到提高速度伺服系统的动态性能的目的。

Home thinks fire refining miscellaneous copper is very inaccessible all the time the standard of tall electric copper, special abound in in a few kinds of impurity, and when fantasticality.

国内一直认为火法精炼杂铜很难达到高导电铜的标准，非凡在几种杂质大量存在，并且变化无常时。

It is found that the later is better than the former greatly, due to the fact that accurate solution by gaussian elimination is zero error. But zero error is ideal situation and it is difficult to reach in practice. So all we can do is to search an optimal solution under many restriction conditions, and the optimal can represent the solution of the question better.

咎其原因，高斯消元法是求解问题的精确解，而在实际生产科研工作中，这种理想状况是很难达到的，因此，遗传算法在多个约束条件下寻找当前最优解作为问题的解，才具有实际意义。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷