一些基本的公共卫生问题，例如脏手而不是肥皂习惯，仍然是棘手的问题，仅仅因为我们无法弄清怎么去改变人们的习惯。
There are fundamental public health problems, like dirty hands instead of a soap habit, that remain killers only because we can't figure out how to change people's habits.
美国的种族关系一直是棘手的问题。
你们避免的是棘手的问题。
他在获奖感言中表示，日益严重的不平等和气候变化是棘手的问题。
Amid his acceptance of the award, he cited rising inequality and climate change as troublesome trends.
一位好朋友曾经让我看到，即使是棘手的问题，也能找到方法做正确的事。
A good friend once showed me that, even with an intractable problem, one can still find a way to do the right thing.
多年来，军事存在及其对日本居民的影响一直是一个棘手的问题。
Military presence and its impact on Japanese residents have been a thorny issue over the years.
但是整个援助问题是个棘手的政治问题。
这个问题很可能是棘手的。
我是第一个问他尴尬问题的人，但后面还会有更棘手的问题。
I was the first to ask him awkward questions but there'll be harder ones to come.
有一个考古学家还没有给出任何答案的棘手问题：拉皮塔人是如何在远古时代完成相当于现今多次登月一样的任务？
There is one stubborn question for which archaeology has yet to provide any answers: how did the Lapita accomplish the ancient equivalent of a moon landing, many times over?
全球性的饥饿问题是个棘手的问题，恐怕科学家们需要付出更多的努力。
The problem of hunger worldwide is a hard nut to crack. I'm afraid that scientists need to put in more efforts.
简·奥斯丁与浪漫主义的关系一直是一个棘手的问题。
Jane Austen's relationship to Romanticism has long been a vexed one.
当我告诉一群表现出无助行为的学生说，是缺乏努力导致了他们数学上的错误，他们就学会了在问题变得棘手时继续尝试。
When I told a group of school children who displayed helpless behavior that a lack of effort led to their mistakes in math, they learned to keep trying when the problems got tough.
让这个问题更加棘手的是：通常的时间管理技巧似乎不够用了。
What makes the problem thornier is that the usual time-management techniques don't seem sufficient.
设计或市场调查一直是一个棘手的问题。
利比亚面临的问题是棘手的，但它也享受到重大优势。
The problems facing Libya are difficult, but it also enjoys significant advantages.
1993年的法律是一种妥协，旨在解决一个棘手的问题。
The 1993 law was a compromise aimed at resolving a thorny issue.
怎样处理金融票据是目前最棘手的问题。
How to treat financial instruments is by far the toughest question.
对于人类来说，资源的消耗是一件棘手的问题。然而，我们必须开始谈及这些问题。
Consumption is a tricky issue for us, but we need to start talking about it.
文件加锁是一个非常棘手的问题，很多时候都存在竞争条件。
File locking is a very tricky issue and race conditions abound.
至于奥巴马自己，谁也不能确定他的想法，倾听这类棘手的问题一直是他的强项。
As for Mr Obama himself, no one is certain what he thinks; listening on such ticklish issues has been his forte.
最棘手的问题是找到这些攻击的来源。
The hardest problem in finding the source of these attacks is attribution.
这对于依靠使用顾客的数据来宣传产品以及卖出广告的杂志社来说，是一个非常棘手的问题。
This is a particular problem for magazine firms, which use customer data to push other products and to sell advertising.
即使技术问题和商业模式问题得到了解决，内容仍然是一个棘手的问题。
Assuming the technology and the business models can be sorted out, there is still the tricky matter of content.
面试官经常会问你这样的问题，你曾经是如何处理棘手的问题的。
Interviewers often ask questions about how you dealt with difficult situations in the past.
而真正的大奖是解决以下这个天文学中最棘手，但也是最根本的问题：宇宙是有什么构成的？
And the real grand prize is helping to solve one of the trickiest and most fundamental puzzles in astronomy: What is the universe made of?
而真正的大奖是解决以下这个天文学中最棘手，但也是最根本的问题：宇宙是有什么构成的？
And the real grand prize is helping to solve one of the trickiest and most fundamental puzzles in astronomy: What is the universe made of?
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