有困难

In 1981, Cockayne proved that the calculation of the domination number on arbitrary graph was a NP-hard problem.

图的支配问题是近年来图论中一个比较活跃的研究领域，有很多实际的应用。1981年Cockayne等人证明计算任意图的支配数是一个NP困难问题。

Upon these grounds (which, when studied in detail, are seen to possess far greater cogency than can be conveyed by a mere summary) it is concluded by modern critics that Deuteronomy is in reality a work of the seventh century BC It is not difficult to realize the significance which the book must have had if it were written at this time.

后，这些理由（即，当详细的研究，被认为是拥有更大的cogency远远超过可传达的只是概要），这是总结近代批评申命记是在现实的工作，七世纪卑诗省，这是不困难实现的意义，这本书必须有，如果写在这个时候。

Many are not color blindness person in distinguishes and in the discrimination purple and other colors also has certain difficulty.

很多人不色盲的人的区别，以及在歧视紫色和其他颜色也有一定的困难。

I was determined to go, come hell or high water.

我决心要去，无论有什麼困难。

We're staying, come hell or high water.

不管有多大的困难，我们都将留下来

We'll go to Tibet come hell or high water .

不管有多大困难我们都要去西藏。

Do not leave this position come hell or high water.

不要离开这个位置不管有多大困难

During these difficult times, it's comforting to have a cuddly friend by your side.

在这些困难的时候，它的安慰有一个可爱的朋友你的身边。

People can have more than one disorder, but reading is the most common area of difficulty.

人可能有一个以上的障碍，但阅读困难是最常见的。

I wasn't aware of how difficult it must be to move into a place where most of the area is communally owned and used for what the majority want to use it for, and decorated the way they want it decorated.

我没有意识到的是，搬进一个属于所有人的地方，而且是别人想怎么装饰就怎么装饰的地方，这会有多么的困难。

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。