在困难中

They faced formidable difficulties in their attempt to reach the South Pole.

他们在到达南极的尝试中遇到了难以克服的困难。

The magnitudes of items and users in the system results in the extreme sparsity of user rating data, which makes it difficult to find neighbors effectively.

随着系统中资源数目和用户数目的不断增加，在整个资源空间上用户评分数据极端稀疏，给有效的查找最近邻居带来了很大的困难。

The off-axis reflection system composed of four aspheric mirrors was designed, but the system structure was not so simple and the performance can also be improved, besides, manufacture and test for large aspheric mirrors are difficult; and then the spherical Fresnel mirror which is easier to be manufactured and tested was used to replace the aspheric mirror, the spherical Fresnel mirror has low cost of replication, but this design also can\'t be used in projection lens because it was only feasible in narrow wavebands; Furthermore, the design making use of catadioptric projection lens was accomplished, this design is greatly applied in rear projector because it has merits of both refraction and reflection. But it had difficulties in color aberration correction and had complex structure.

设计了四片非球面组成的离轴式反射系统，然而，仅采用非球面设计系统结构不够精简，性能也有待进一步提高，且非球面面形较大时加工和检测都存在一定的困难；继而提出了用球面Fresnel反射镜代替非球面的设计方法，虽然Fresnel反射镜加工和检测更为简单，且复制成本低，但对波长具有选择性；进而，应用折反系统结合的方式设计了离轴式投影镜头，该方法因兼具折射和反射的优点，在大屏幕超薄背投系统的设计中广为应用，缺点是会产生难以校正的色差，且结构复杂。

All local university pay the utmost attention to the employment of university students during its development ,but there are many factors restricting the employment of university students,such as the mode ,personnel training , speicality e stablishment lagging behind social demand and ignoring applied talent cultivation .

在地方院校发展过程中，如何更好地解决大学生就业是各地方高校必须优先考虑重要问题。制约地方院校大学生就业的因素是多方面的，其中，相同的办学模式和人才培养规格，专业设置与调整落后于社会需求以及忽视应用型人才的培养是造成大学生就业困难的主要因素。

In statics the difficulty about income does not arise .

在静态学说中，关于收入的困难并未发生。

The feature extracting is an important,difficult step in the fault diagnosis processing.

在机电设备的故障诊断中，特征提取是最重要也是最困难的一个环节。

To detect a moving point target that is submerged in noisy background is a very difficult problem.

要把淹没在噪声背景中的运动点目标检测出来是一个十分困难的问题。

In the new situation, how to solve in subsidization work and make national financial policy and the special fund carry out reasonably, is become an important aspect of the university work.

在新的情况下，如何解决好资助工作中的各种矛盾和困难，使国家的济困政策及专项资金合理地落实，已经成为高校学生工作的一个重要方面。

In the paper, we analyze many means of surface structure survey, based on common practice seismic work.

在地震勘探中，近地表的不均匀性给激发、接收和静校正等带来很大的困难。

In order to solve the difficulties of recognizing tabulation in the analysis of Chinese layout,the projecting method is given based on the characteristics of the histogram of vertical and horizontal projecting.

为了解决在中文版面分析中，对表格的识别的困难，根据表格的垂直和水平投影直方图的特征，总结出一种表格识别方法——投影法，通过对常见报刊的测试，对表格的识别率达到 90 %以

Plunder melds and run with this jewel!

掠夺melds和运行与此宝石！

My dream is to be a crazy growing tree and extend at the edge between the city and the forest.

此刻，也许正是在通往天国的路上，我体验着这白色的晕旋。