科学家正在不断加深对睡眠的研究，他们对其中的一件事实确信无疑：对于人类来说，睡眠与食物和水一样重要。
Scientists are continually learning more about sleep, but one thing they know for sure is this—for humans, it is as important as food and water.
其实，物理学家对暗物质的存在确信无疑，最早上世纪30年代做的天文观察就显示出要保持时刻运转的星系稳定聚集在一起远非一般性物质所能；换句话说，一个星系的可见部分一定是牢牢嵌在一种不可见的光晕上的；否则，它就会在运转过程中四分五散。
Physicists are pretty confident dark matter exists. Astronomical observations first made in the 1930s show there is not nearly enough ordinary matter to hold galaxies together as they spin round.
因此，如果对超对称性确信无疑，那么宇宙空间中元素同位素的存在就会比标准模式预测的要少。
So if supersymmetry is true, there should be less of this isotope around than the Standard Model predicts.
如果你做了一个你确信无疑自己可以达到的承诺——或者更好、更优秀地达成这个承诺——你将为许多未来的成功和成长打下基础。
If you make a commitment that you know without a doubt you can keep-or even better, exceed-you will build a foundation for many future successes and growth.
尽管你确信无疑已经有了生理上的焦虑症状，但请你不要误会，这仅仅是慢性的症状而不是真正的生理上的疾病。
Don't misunderstand, you are suffering from a chronic illness but it's not really a physical illness, although you most certainly have physical anxiety symptoms.
从人们对这个问题的认识和确信无疑的态度来说，这并不真的是个疑问。
OK, this is not really a myth in the sense that people think about it and believe it to be true.
我确信无疑：我们能改变世界运作的一些方式，通过一次一点的改变。
I have no doubt: we have the ability to change the way that the world works, one bite at a time.
有一件事却是确信无疑的：他们的季后赛主场优势正岌岌可危。
One thing is for sure: It's sabotaging their efforts to get a strong playoff seeding.
德拉吉将全权负责欧洲政客们已经公布的另一个“复杂的计划”来解决债务危机：这一计划几乎确信无疑将给投资者们过高的期望浇一盆冷水。
Mr Draghi will take charge just as Europe’s politicians unveil yet another “comprehensive plan” to solve the debt crisis: one that is almost certain to disappoint investors’ inflated expectations.
所以尽管我们仍会为amberMiller感到震惊和敬畏。可以确信无疑的是：她的行为不会成为新的标准。
So, while we're still shocked and awed by Amber Miller, you can rest assured — her story is not the new normal.
用样确信无疑的生命的美好
没有人能确信无疑的知道。我们也没有办法知道她是如何死亡的。
Nobody knows for certain. We have no means of knowing how she died.
任何人只要作出和我一样的努力，胸怀同样的期望和信心，就能做出我所做过的一切。对此，我是确信无疑的。
Anyone who like me efforts, mind the same expectation and confidence, can make everything I ever did. To this, I'm sure.
因为只有当我们毋庸置疑的拥有足够的军备，我们才能毫无疑问地确信永远不会使用这些军备。
For only when our arms are sufficient beyond doubt can we be certain beyond doubt that they will never be employed.
他怪罪于罗恩和赫敏，他们决意的漠视就像无情的大雨一样令他沮丧，但都不能削弱他的信心，他依然是那么确信无疑。
He blamed Ron and Hermione: Their determined indifference was as bad as the relentless rain for dampening his spirits, but neither could erode his certainty, which remained absolute.
我几乎没有时间，因为一上马车我就参与了另一场已经开始的谈话，但我对自己的想法确信无疑。
I should not have had time, as, upon taking my seat in the omnibus, I went on with a conversation already commenced, but I felt a perfect certainty.
对我来说，过去的一年是那些循环中的一环，慢慢地却确信无疑地被抛起然后回落的过程。
This past year was one of those cycles for me — and slowly but surely the pieces that were thrown up in the air are falling into place.
起先我还以为这是在开玩笑，但又一个警察出现在我的面前，这次是位身着警服的，这一下使我确信无疑了。
At first I thought it was some kind of joke. But then another policeman appeared, this time in uniform, and I was left in no doubt.
无论如何，我唯一确信无疑的是，你所在之处的地名一定有一个天使般的前缀，要么，至少也该是圣徒和小天使聚居的一个神秘领地，沿着海岸线。
Nevertheless, one thing that I know for sure: it must be a place with an angelical prebase, San or Santa something, or at least a mysterious precinct of saints and angelets, de la orilla.
当莱吉尔马赛进行的时候，保罗对“活力火花”确信无疑，这是一匹很不显眼的马。
And when the Leger was coming on, Paul was "sure" about Lively Spark, which was a quite inconsiderable horse.
米兰的确对我很有兴趣，但尤文图斯才是我的第一选择，自从听说斑马军团想得到我的消息后，我就对此确信无疑。
It's true that Milan were also interested, but Juventus were my first choice. I never had any doubt since I first heard the Bianconeri wanted me.
怪事之一是。仅仅是偶尔之间，你才确信无疑你会活到永远的永远的永远。
One of the strange things in the world is that it is only now and then one is quite sure one is going to live for ever and ever.
爱需要不可能，需要确信无疑，需要燃烧的天空，需要享之不尽的春光…
Love demands the impossible, the absolute, the sky on fire, inexhanstible springtime…
他的眼神和脸色的变化，让我确信无疑，他就是你要找的人！约翰说。
His eyes and the expression on his face told me, he is the very person you're looking for!
他的眼神和脸色的变化，让我确信无疑，他就是你要找的人！约翰说。
His eyes and the expression on his face told me, he is the very person you're looking for!
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