Does every individual have an obligation to think seriously about important matters,even when doing so may be difficult?
是否每个人都有义务去对那些重要的事务认真思考，即使这样做可能非常困难？
They are doing so either by choice, because retirement savings have been devastated and they fear losing their jobs, or by necessity, because it has become so difficult to borrow.
消费者如此做，不是出于选择——因为退休储蓄已被破坏而且他们担心失业，就是出于必需——因为借钱已经很困难。
That becomes a difficult feeling to sustain if we have already seen ourselves doing it.
如果我们已经发现自己正在做了，那就形成了一种难以继续下去的感觉。
In the past doing without tail fins would have created an aircraft that is difficult to fly. But things have now changed.
在过去，没有尾翼的飞机很难飞行，然而，现在情况发生变化了。
Do you have an easier time doing difficult tasks earlier or later in the day?
完成困难的任务时，是在一天早些时候容易还是晚些时候？
For many years, machines have been doing work that people once did, including some difficult jobs.
多年来，机器人一直在做人们曾经做过的工作，包括一些困难的工作。
It's very difficult to describe how to move amongst the levels, you really have to learn by doing it, by trial and error.
很难描述如何在各个层次间移动，你真的必须亲身通过尝试和犯错来经历。
But at the very beginning, listening seemed a little difficult to me. So I have been doing a lot of listening practice, such as listening to tapes, watching English TV programs.
但是，一开始听力对我来说似乎有点难，所以我做了很多听力练习，比如听录音，看英语电视节目等等。
Probably the most difficult thing about pursuing significant change is doing it when you don't have the knowledge, financial or emotional tools available to make the process go smoothly.
也许，在进行显著改变时遇到的最困难的事情，就是即便对相关知识一无所知，也缺少财务支持或情感工具，却还是要顺利完成。
I have absolutely not set a date for my return, because muscular lesions are always difficult to predict. Now I think we are doing the right things to make my recovery as fast as possible.
我绝对不会确定我的付出日期，因为肌肉问题一直是很难正确预测的。现在我认为我们正在为我尽快的康复作出准确的治疗。
You have such strong desires that it is very difficult for anyone to stop you from doing something you have decided upon.
当你决定作某件事时，便有着任何人都难以阻止的强烈意愿。
Doing this in English may be difficult, but remember that finance is a very international industry, and if you want to do serious work in it, you will have to be able to talk about finance in English.
用英语做到这一点可能有些困难。但请记住金融是一个十分国际化的行业，假如你想在该领域从事严肃的工作，你就必须具备用英语谈金融的能力。
If this faith did not exist it would have been more difficult, perhaps impossible, for them to use all their powers to torment people, as they were now doing, with a quiet conscience.
要是没有这种信仰，恐怕很难甚至不可能象现在这样心安理得地拚命折磨人。
That's what I have been doing every time we've had some difficult races back to back.
这是我每次经历接连受到打击后都会有的表现。
We are doing all we can to keep him, but it is a difficult situation and we will have to wait and see what the player wants.
但是这是很困难的情形，我们不得不等着看球员到底想要什么。
We are doing all we can to keep him, but it is a difficult situation and we will have to wait and see what the player wants.
但是这是很困难的情形，我们不得不等着看球员到底想要什么。
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