困难

The loosed rockmass of different scope and causes some times developed very deeply under the ground in somewhere, for example, there is seriously fracture and opening cracks in the rockmass where it is 340m away from the adit entrance in a dam site, which give rise to a difficulties for selecting an important project.

松动岩体实际上是各种成因变形岩体的特殊形式，有其特殊的一面，它的渗透性、变形性和其它力学行为都十分复杂，而成因不同的松动岩体由于其规模和发育深度有时很大，如有些坝址的岩体在340m硐深的部位还严重开裂，给重大工程的选址决策带来困难。

Chavent's research for matching the history of production in a field by use of optimal control theory and through the research for the space of the adjoint function, we have extended the theory of adjustment for the ease of a single-phase system to a double-phase one.

Chavent利用最优化理论研究油气藏生产动态拟合的基础上，通过对伴随函数空间的研究，将辨识理论由单重介质系统扩展至双重介质系统，并针对原方法多解，迭代中易发生逸出、振荡、仅收敛于局部极小等困难，重点研究和探讨了改善问题的适定性和加速算法的收敛性问题。

Her last adjuration to daughter was to escape from dinginess if she could.

她对女儿最后的叮嘱是要竭尽全力摆脱这种困难。

However, adjustment of lift is very difficult.

然而，调整提升是非常困难的。

However, getting network administrators to take this step is difficult.

然而，让网络管理采取这一步骤是困难的。

I think he conducted himself admirably, considering the

考虑到那种困难的情况，我认为他的表现令人钦佩。

Admittedly , this is an extremely difficult task .

众所周知，这是一项极其困难的任务。

Adrian: I know we've all been forced to make difficult decisions to save our human civilization.

阿德里安：我知道我们都不得不作出困难的决定，以拯救我们的人类文明。

The study of adsorption behaviour of ZSM-5 at the catalytic reaction conditions especially when dealing with multicomponent adsorbate system is very difficult.

对ZSM-5沸石在催化反应条件下吸附行为的研究、特别是对涉及多组分吸附物体系吸附行为的研究是很困难的。

It defines the Bulk Lane Demand as the ratio of population to exit capacity that is adversative to the meaning of accessibility.

用于区域疏散风险评价的临界簇模型(Critical Cluster Model，CCM)将需要疏散的人口与由此产生的对道路容量的需求相结合，通过对道路网进行全局优化，确定具有较高疏散困难度的区域。

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。