你怎么知道？
How sure are we that the suspect actually wrote the statement?
我们有多少把握确定嫌疑人确实写下那份声明？
How sure would he need to be about the identity of an attacker to "fire back"?
为确定攻击者身份并“反击”，他需要多大把握？
They then had to say just how sure they were of their answer, on a scale of one to six.
然后他们要说出对自己答案的确定程度，有1到6个级别。
How sure are we that this kind of change in the environment would not lead to catastrophe?
我们有多大把握这种环境变化不会引起灾难？
"How sure are you?" Annabel asked, looking at the stars below. They couldn't see Lionel anywhere. Now they would have to trust their faith.
“你怎么知道？”安娜·贝利看着下面的星星问。他们根本就看不见莱昂内尔在哪。不过他们现在不信也不行了。
The fact that Kate, normally so discreet, felt confident enough to mention this shows how sure she was that she would be wearing a ring then and not several years later.
所以，当时的情况就是，一向谨慎的凯特，在这件事儿上太过自信了，甚至说，用不了几年，她就能戴上王室的戒指了。
I make sure I make time for fishing because it's how I de-stress.
我确保抽出时间钓鱼，因为这是我消除紧张的方式。
He seemed so sure of his decision, how could he flip-flop so dramatically now?
他似乎对自己的决定非常肯定，现在怎么会戏剧性地改变立场呢？
That's for sure. How about these Chinese arts and crafts?
那当然，中国的工艺品怎么样？
They are not yet sure how the changed genes would affect the other species.
他们还不确定改变后的基因会如何影响其他物种。
I'm not sure how we'll reach that better place beyond the horizon, but I know we'll get there.
我不确定我们怎么到达地平线之外更加美好的地方，但是我们知道我们将会到达那里。
Each cluster includes a pair of eyes with a sophisticated lens, retina, iris and cornea. Scientists aren't sure how they process what they see.
每组包括一对拥有复杂晶状体、视网膜、虹膜和角膜的眼睛。科学家们还不确定它们如何处理它们看到的东西。
I'm not sure how much we have to write yet—not too much, I hope!
我还不确定我们要写多少——希望不会太多！
Without him around, I am not sure how I could do a senior thesis on The Canterbury Tales books.
如果没有他在身边，我不确定自己是否能完成这篇关于坎特伯雷故事集的毕业论文。
We are not sure how well we can reproduce the melodies or rhythms, because they were apparently improvised in many cases.
我们不确定我们能多完整地重现旋律或节奏，因为它们显然在很多情况下是即兴创作的。
I am not precisely sure how long I stayed frozen in that position, but the next thing I recall is the apparition vanishing before my eyes.
我不能精准地确定我在那个位置上呆了多久，但我记得的下一件事就是那个幽灵在我眼前消失了。
To put it another way: How can we make sure that the thinking of intelligent machines reflects humanity's highest values?
换句话说：我们如何才能确保智能机器的思维反映了人类的最高价值观？
No one is quite sure how the friendship first began.
没有人确切知道这段友谊是如何开始的。
No one is sure how the ancient Egyptians built the pyramids near Cairo.
没人知道古埃及人是如何在开罗附近建造金字塔的。
Miss Allan beamed at him. "You are clever to guess. I'm sure I don't know how you did it."—"Deduction," James said.
阿伦小姐对他笑道：“你很会猜，我确实不知道你怎么办到的。”——杰姆斯说：“推论。”
It has set us back in so many respects that I'm not sure how long it will take for us to catch up.
我们在很多方面都被延误了，不知道需要多久才能赶上。
Um, I'm not sure how to ask you this...
嗯，我不知该怎么问你这个…
Ask me if you're not sure how to do it.
你要是拿不准怎么干，就问我。
Be sure to read about how mozzarella is made, on page 65.
务必要阅读第65页上如何制作莫泽雷勒干酪的内容。
He's never done this type of work before; I'm not sure how he'll fit in with the other people.
他过去从未干过这种工作，很难说他是否会与其他人配合得好。
If you're not sure how to talk to them about it, ask a trusted friend for advice.
如果你不确定该如何和他们谈论这件事，可以向你信任的朋友寻求建议。
Yet, as I thought about Juan's question, I was not sure how much more we could really rule out.
然而，当我思考胡安的问题时，我不确定我们还能排除多少可能性。
Summarize the points made in the lecture, being sure to explain how they oppose specific points made in the reading passage.
总结演讲中提出的观点，一定要解释他们如何反对阅读文章中提的具体观点。
Yes, I'm not sure how I'm going to cope with the work.
是的，我不知道该如何应对这项工作。
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