They all fell silent, looking rather scared; the problem facing them seemed insurmountable.

大家沉默了，看上去都非常担心；他们面临的困难似乎难以克服。

So today, when the challenges we face start to seem overwhelming - or even impossible - let us never forget that doing the impossible is the history of this nation...it's who we are as Americans...it's how this country was built.

所以当今我们面对的挑战似乎艰巨得难以克服，请别忘记开创不可能的奇迹，正是我们国家的历史，美国人就是样，我们的国家就是么来的。

Working side by side, we have the ability to solve the most insurmountable problems and to triumph over the greatest of adversities.

只要各国携手合作，我们就有能力解决最难以克服的问题，战胜最大的逆境。

The enemy's attack was more formidable than we had expected.

敌人的攻击较我们先前所预测的要难以克服。

Harmon and his colleague Mary Gauvain learned just how difficult it can be for people to get over their disgust at the thought of drinking recycled water.

哈蒙及其同事玛丽·高文了解，人们想环水时，有多难以克服恶心感。

Even for 21st-century industrialized civilizations, jungles and rainforests proved difficult to overcome because building infrastructure through them is a significant challenge.

即使对于 21 世纪的工业文明来说，丛林和雨林也是难以克服的困难，因为在丛林和雨林中设基础设施是一项巨大的挑战。

But the challenge did not seem to leave anyone flustered, insuperable obstacles being standard in paleontology.

不过古生物学对难以克服的阻碍见怪不怪，所以项挑战似乎没有让任何人感慌乱。

Well, phobic states often develop into severe crippling challenges that can be very difficult to overcome.

恐惧状态通常会发展成严重的，难以克服的挑战。

These are all very difficult factors to overcome from the perspective of any outside invader.

从任何外部入侵者的角度来看，些都是非常难以克服的因素。

What formidable obstacle is she now to bring forward?

她现在又要拿出什么难以克服的理由呢？

But look, there's an energetic cost to interstellar travel, which is really hard to overcome.

但要知道，星际旅行存在巨大的能量消耗，实在难以克服。

And I think that DNA was too strong to overcome disruptive innovations.

我认为那种基因过于强大，难以克服颠覆性创新。

And that's always been something that I've struggled with.

始终是我难以克服的一点。

And then I know the $43,000 or $44,000 seems insurmountable.

我知道那4万3千或4万4千美元看来难以克服。

Like, this is going to be a hard one to get over.

会是个难以克服的难题。

Gradually Ronald's insistence became less difficult to overcome.

渐渐地，罗纳德的坚持变得不那么难以克服了。

And that's can be tough to get past at times.

有时候，确实难以克服。

One idiosyncrasy for which she often apologized, she found it excessively difficult to conquer.

她经常为此道歉的一种特质， 她发现它非常难以克服。

A lot of people who are struggling with an eating disorder or body image issues or even just with self-acceptance have a hard time overcoming it because they don't have anyone to talk to or anyone to give them guidance.

许多正在与饮食失调、身体形象问题，甚至只是自我接纳困扰作斗争的人，都难以克服些问题，因为他们没有可以倾诉的对象或给予指导的人。

One of the things people seemingly struggle with when it comes to speaking, and one of the things that, listening to you, that you demonstrate is, your voice is clear as a bell.

人们在说话时似乎难以克服的一个问题，以及从你说话中展现出的一个优点是，你的声音清晰响亮， 没有犹豫或停顿。