You do not know whether what you're told is true or false.
你不知道别人告诉你的是真的还是假的。
I do not know what to do with the information if I cannot pass it on.
如果无法传送出去，我不知道该拿这情报怎么办。
Smiling almost always leaves a positive (积极的) impression on people, especially those who do not know you.
微笑几乎总是给人留下积极的印象，特别是那些不认识你的人。
We do not know whether this story is true or not, but it tells us that rice has the similar value as gold to the Chinese.
我们不知道这个故事是否真实，但它告诉我们，大米对中国人来说和黄金一样有价值。
My dear children, I do not know.
我亲爱的孩子们，我不知道。
I do not know Chinese sign language.
我不知道汉语手语。
"That I do not know," said the Rat simply.
“这我不知道。”水鼠兰特简单地说。
他们不知道。
我不知道这件事。
Pale from fright, Heidi said, "I do not know."
海蒂吓得脸色苍白，说：“我不知道。”
I do not know myself what is the matter with me!
我自己也不知道我是怎么了！
We do not toll for little Kay; we do not know him.
我们不为小小的加伊而敲丧钟；我们不认识他。
"I do not know where your house is," she answered.
“我不知道你家在哪儿。”她回答。
"But I do not know it," said he, "and no one knows it!"
“可是我不知道，”他说，“谁也不知道！”
So far we do not know how much of a problem it might be.
到目前为止，我们还不知道这个问题的严重性。
Unfortunately, we do not know how to build rockets that fast!
遗憾的是我们不知道怎样制造这么快的火箭！
The question of what we know and do not know constantly bothered me.
我们知道什么和不知道什么这个问题一直困扰着我。
I will willingly go away with you, but I do not know how to get down.
我很愿意和你一起走，但是我不知道怎么下去。
It is very important that we must be honest about what we do not know.
最重要的是，对于我们不了解的事情我们必须坦诚交待。
I really do not know where the Australia media got this latest one from.
我真的不知道，澳大利亚媒体是从哪里得到这些最新结果的。
"That is all very well," said he, "but still I do not know what it is to shudder!"
“这很好，”他说，“但我还是不知道害怕是怎么回事！”
We do not know whether lower carbon footprints will always be better for biodiversity.
我们不知道低碳足迹是否总是有利于生物多样性。
Scientists do not know how much and what kinds of noises are harmful to ocean animals.
科学家们不知道有多少噪音以及何种噪音对海洋动物有害。
I do not know where else to take her, as she is too young to come with me to Frankfurt.
我不知道还能带她去哪里，因为她太小了，不能和我一起去法兰克福。
If people do not know how much they are eating, it can be really hard for them to stick to a diet.
如果人们不知道自己吃了多少，他们就很难坚持节食。
When students graduate from college, many of them do not know how they want to spend their working lives.
大学毕业后，许多学生不知道如何度过他们的工作生涯。
If the voters do not know how to use a computer, how do you expect them to finish the voting process through computers?
如果选民不知道如何使用电脑，你怎能期望他们通过电脑完成投票过程？
Potato chips are an American invention, but most Chinese, for instance, do not know than Frito-Lay is an American company.
薯片是美国人的发明，但比如说大多数中国人，不知道菲多利是一家美国公司。
For what this separation is done, I do not know, unless it be to hinder the development of the child's affection towards its mother.
除了妨碍孩子对母亲感情的发展，我不知道这种分离还会造成什么后果。
Moreover, there are processes that influence climate, such as modifications in land use, that scientists do not know how to simulate.
此外，还有一些影响气候的过程，如科学家们不知道如何模拟的土地利用的变化。
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