The problem is difficult to understand.
这个问题难于理解。
Gathering statistics on the scale of the problem is difficult.
按这个问题的规模来收集统计数据是有困难的。
The problem is difficult to solve in field of bellows designing.
该问题是波纹管设计的难点之一。
The problem is difficult because BPA is used for most types of plastic foil in which you wrap food. Thus, a direct contact with the body is established and it occurs on a daily basis.
更困难的是，BPA是最常用在保鲜膜中的原料，人们每天都不可避免的会有直接接触。
Why is the obesity problem in Britain so difficult to solve?
为什么英国的肥胖问题如此难以解决？
No matter how difficult the problem is, think about it by yourself first.
不管问题有多难，首先要自己思考。
But the problem is a difficult one to solve.
但这是一个难以解决的问题。
It is very difficult to determine the cause of a problem that only occurs sometimes.
只有偶尔会发生的问题是很难确定问题的起因的。
Others have built such a dream device, but none has yet overcome the problem of input: typing on a screen is difficult and handwriting recognition has never really worked.
其他厂家也曾经尝试推出这种梦幻设备，但是他们都没能克服一个问题：屏幕输入很困难，而手写识别率低的可怜。
A much more difficult problem for the retailer is to assure that replenishments for the back room are delivered in time.
但是，零售商还有一个更难解决的问题：如何确保补充的产品及时交付到仓库？
The fact that this is a monetary union of 17 countries makes decision making difficult, which complicates the problem.
这是一个17个国家的货币联盟，很难做决定，使问题更加复杂。
The problem is that strangers are difficult to convert. And the other problem is that they're expensive to reach.
但问题是陌生人难以转变成产品的宣传者，想利用他们的好口碑要付出昂贵的价钱，还有最困难的是，常常要满足他们的需求。
The most difficult problem faced by the Google Books team is garbage data.
Google图书面临的最困难的问题是垃圾数据。
Obviously this is a difficult problem, but the incentive to solve it is very big. The main approaches fall into the following categories.
显然，这是一个很困难的问题，但是解决它的激励也很大。
But for a driver, if you have an accident and you have this problem, the recovery is more difficult.
但对于一个车手，如果你经历过一次事故，并且有这些问题，恢复起来就要困难些。
The only problem is that it can be extremely difficult to achieve such a following, which is where we come in.
唯一的问题是，拥有这么多追随者是一件很难的事，而这也正是我们的切入点。
As part of their conversations with Afghan women, the Marines are to ask basic questions, including what is the most difficult problem facing the village.
作为与阿富汗妇女的谈话的一部分，女海军陆战队员问的基本问题，包括村里面临的最困难的问题是什么。
Without adequate data on the nature and extent of the problem it is difficult to formulate a policy to foster a culture of integrity that limits and discourages deviant behaviour.
由于没有充分的数据资料来证实这种问题的本质和严重程度，因此就很难制定一种策略来树立学术诚信、限制和阻止不轨行为。
We recommend that you run with tracing disabled in this mode, as this typically requires the user to reproduce the problem, which is difficult if it is not in interactive mode.
我们建议在此模式下禁用跟踪，因为这通常需要用户复制问题，如果没有在交互模式下这是很困难的。
The problem with that approach is that it leaves the most difficult tasks to the end of the day.
这种方式的问题是，我们把最困难的任务留在了一天之中的最后时刻。
An important example of the lemons problem is the inventor who creates an idea that is difficult or impossible to patent.
“柠檬”问题的另一个重要案例是那些发明了很难甚至不可能寻求专利保护的发明者的困境。
In most low-income countries, especially in Africa, the magnitude of the problem is unknown, as this form of TB is so difficult to diagnose.
在大多数低收入国家，特别是在非洲，由于这种形式的结核病难以诊断，问题的严重程度尚不得而知。
The problem is that within the femoral nerve all the fascicles are themselves bundled together, making it difficult to stimulate them individually.
问题是在股骨神经内所有的神经束是捆绑在一起的，很难去单独刺激它们。
Identifying the problem, or problems, is the first and most difficult step.
辨出问题所在，是第一步同样是最困难的一步。
One problem was that it is extremely difficult to recreate the effect in the laboratory.
有个问题就是想在实验室内再现地磁效果异常困难。
In practice the problem is that producing such "cellulosic" ethanol is much more difficult and expensive than producing it from other crops.
当然实践中提炼这种纤维乙醇比起用其它谷物原料要困难和昂贵得多。
Missing or inconsistent package information is probably the most difficult problem to solve.
丢失或者不稳定的包信息可能是最难解决的问题。
The second problem is that it is very difficult to express a wide range of complex policies using this notation.
第二个问题是使用这种表示法表达许多复杂的策略非常困难。
The second problem is that it is very difficult to express a wide range of complex policies using this notation.
第二个问题是使用这种表示法表达许多复杂的策略非常困难。
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