"It is a completely new approach to a very difficult problem," says Oriol Pujolas, a theoretician at the CERN laboratory, near Geneva, Switzerland. "Yet it's a very simple framework we know very well.
“这是对一个超级难题的一种全新尝试，”毗邻瑞士日内瓦的欧洲粒子物理实验所（CERN）的一位理论研究员，OriolPujolas说道，“而它却用的是一个为我们所熟知的非常简单的框架。”
He is engaging in dealing with a very difficult problem.
他正忙于处理一个棘手的问题。
It is a very difficult problem to look for the best equalization point between these two.
在这两者之间寻找最佳平衡点是一个困难的问题。
One morning Newton got up very early because Newton was working on a very difficult problem.
一天清晨，牛顿起得很早，因为他正在研究一个难题。
The automatic identification of seal imprints is a very difficult problem of pattern recognition.
印鉴自动识别是模式识别中的一项非常困难的课题。
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。
Stock market forecasting is a very difficult problem for study and the forecasting support system is an effective method.
股票市场的预测是一个非常难的研究课题，建立股票预测支持系统是进行股票预测的一种有效手段。
However, it is well know that the random vibration analysis of vehicle-bridge coupling system is a very difficult problem.
而对车辆-桥梁这种复杂的耦合系统进行随机分析，历来被认为是一件非常困难的工作。
Stability and reliability evaluation of tunnel and underground engineering is a very difficult problem in rock and soil engineering.
隧道和地下空间工程的稳定性和可靠性评价的问题一直是岩土工程界关注的难点问题。
When a database encryption system is designed, the design of key-managing module is a very difficult problem and must be solved firstly.
密钥管理方案的设计是数据库加密系统设计时必须首先解决的一个难题。
Optimization of forming process is a very difficult problem due to high nonlinearity and huge computational cost of numerical simulations.
这主要是由于塑性成形数值模拟的高度非线性和大计算量特征，使得成形过程优化变得非常困难。
The disposal means of high concentration and poisonous organic waste liquid is a very difficult problem to the field of circumstance protection.
高浓度难生物降解的有毒有机废水，其处理方法一直是困扰环保领域的“老大难问题”。
Urban garbage disposal is a very difficult problem of urban management. Selection and distribution of garbage disposal field affect environmental quality.
城市生活垃圾的处理为城市管理的一大难题，垃圾填埋场地的合理选择与布局直接关系到场地四周的环境质量。
Identification of dynamic natural frequencies and viscosity damping coefficient for a large-scale structure in practical working condition is a very difficult problem.
大型构件在实际工作环境中的系统动态固有频率和粘性阻尼系数辨识一直是一个“棘手”的问题。
As the data points of 3d faces are huge in size and face has a complex physiological structure, thus establishing point-to-point correspondence is a very difficult problem.
由于三维人脸数据点多，人脸生理结构复杂，因而确立点对点的对应关系是非常棘手的问题。
Stress wave propagating in elastic structures under impact or explosive loading is a very difficult problem analytically. But the problem could be analysed by dynamic photoelasticity.
爆破与高速冲击载荷产生的应力波在弹性结构物中的传播，在理论分析上极为困难，但这类问题可以用动态光弹性法进行分析。
Stress wave propagating in elastic structures under impact or explosive loading is a very difficult problem analytically. But the problem could be analysed by dynamic photoelasticity.
爆破与高速冲击载荷产生的应力波在弹性结构物中的传播，在理论分析上极为困难，但这类问题可以用动态光弹性法进行分析。
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