练太级去难吗？
Russian is a diffcult language to master.
俄语是一种难掌握的语言。
We cannot control life's diffcult moments.
我们无法控制生活的艰辛。
We conquer all diffcult, depend on our power.
我们依靠自己的力量，克服了一切困难。
The second part is the most diffcult and important.
第二部分是本文的核心。
I think the most diffcult in learning english is grammar!
我认为认为最困难的是学习英语语法！
So in the XinXiang area, marketing of KELON is very diffcult.
科龙在新乡地区的市场营销处于两头受到夹击的困境之中。
The most important problem is that I find it diffcult to study my lessons.
最重要的问题是我发现我学习我的课程有些困难啊。
But for many people like me, it is diffcult to express themselves in English.
但是，对于许多人，会像我那样，很难用英文去表达自己。
It was diffcult to squeeze the bolster into the mouse-hole; but they managed it somehow.
长枕头很难挤进老鼠洞，不过他们七弄八弄总算搞定了。
Thinking is easy, acting is diffcult, and to put one's thoughts into action is the most diffcult thing in the world.
这句话意思是“想很容易，行动很难，而把想法付诸行动是世界上最难的事。”
With the ever-increasing complexity of the structure of engineering equipment, fault diagnosis is becoming more and more diffcult.
工程设备的结构日趋复杂，使故障诊断的难度不断增大。
The western development is a long term and diffcult process which needs the legal protection in addition to the necessary series of policies.
我国的西部开发是一个长期而艰巨的过程，除了一系列的必要的政策指导外，还需要辅之以系统的法律保障。
The search proved diffcult, for the puma was often observed at one place in the morning and at another place twenty miles away in the evening.
搜索美洲狮确实很困难，因为它常常是早晨出现在某处，而晚上又出现在二十英里外的另一处。
But later, I found that English is not diffcult at all. I read English after recording daily. I write a diary daily, and do a piece of work everyday too!
我每天都坚持写一篇英文日记，做一两份的英文练习和早晚都跟着录音机一起开口读。
The tactical co operation of the units in battle group is the key to enhance the capability of battle group as a whole, of course, it's very diffcult to achieve it.
群内各兵力的战术协同是提高兵力群整体作战能力的关键，当然也是最难实现的。
An analytical confirmation was presented for whether the non-over constrained 5-DOF parallel manipulators were existed, that is still an open diffcult problem in the mechanism field.
针对非过约束五自由度并联机构是否存在这一机构学公开难题进行了解析判定。
Field parcel image consists of multiple target regions where different field objects are always interfered each other, so segmentation and feature extraction of field parcel image are very diffcult.
农田地块图像包含的目标区域多、不同地物间信息相互影响和干扰明显，因此农田地块图像的分割提取非常困难。
Some cases therefore apeared diffcult in implementation, besides domestic factor of losing party, some inherent institutional defects of Dispute Settlement Understanding may be the important factor.
部分案件之所以执行困难，除了败诉方国内因素外，《关于争端解决规则和程序的谅解》固有的一些制度性缺陷是重要原因。
Some cases therefore apeared diffcult in implementation, besides domestic factor of losing party, some inherent institutional defects of Dispute Settlement Understanding may be the important factor.
部分案件之所以执行困难，除了败诉方国内因素外，《关于争端解决规则和程序的谅解》固有的一些制度性缺陷是重要原因。
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