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 are you about the quality of the computer you own?
您对自己的电脑的质量有信心吗？
How sure are you about the quality of the MP3 Player you own?
您对自己的MP3播放器的质量有信心吗？
This illustrates how sure and certain every one of God's promises are.
这就显示了神的每一个应许是多么确定无疑。
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。
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 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！
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。
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。
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。
Be sure you know what your habits are, and how they affect you.
明确地了解你自己的习惯，以及它们是怎样影响你的。
We have no sure access to what they thought and how they felt about things.
我们无法确切了解他们的想法和感受。
I'm not sure how my parents feel.
我不确定我的父母是怎么想的。
In fact, I'm not quite sure how it happened.
事实上，我不太确定这是如何发生的。
有人会问我为何如此确信。
I am not sure how the Internet connection will be affected.
我不肯定这里的网络连接是否会受到影响。
I'm not sure how else to say it.
我不知道还能怎样表达。
不知道怎么办？
To this day, I'm not sure how to define this feeling.
直到今天，我还是不知该如何定义这种感觉。
To this day, I'm not sure how to define this feeling.
直到今天，我还是不知该如何定义这种感觉。
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