We could not say 'All spinsters have curly hair' and know it to be true without experience.
我们不能说“所有未婚女子都有卷发”并在没有调查的情况下确认其正确性。
Those who have worked hardest to keep it afloat are exhausted and know it is not in their power to save it anyway.
这些人工作兢兢业业，穷尽其力，以不让欧元自生自灭，他们深知，无论怎样，他们的能力都达不到拯救它的程度。
I was told — and know it to be right — that he had gone to the bathroom upon arising in the morning and was sitting on the stool when the affliction overcame him;
有人告诉我（我知道这是真的），他早上起床后，去上卫生间，坐在马桶上的时候灾难击垮了他。
Now we know about the buckling, it could give you a measurement point because you can take the muscle to a particular length and know it begins to buckle at that length.
现在我们了解了这种卷曲，它可以给你一个测量点，这是因为你能把肌肉拉伸到一个特殊的长度，并且知道在这个长度肌肉开始卷曲。
Sometimes food goes bad, but people don't know it, so they eat it anyway and then they get sick.
有时食物变质了人们却不知道，所以还是食用了它，结果就病了。
It helps to know French and Creole if you want to understand some of the lyrics.
如果你想明白其中一些歌词，需要懂法语和克里奥尔语。
Like most tools, you need to know when and how to use it to the best advantage.
与大多数工具一样，您需要知道何时以及如何充分利用它。
You know, it implied that Sally doesn't know much about the university's history and it called her a big city politician because she's from Boston.
你知道，这意味着萨莉对这所大学的历史不太了解，它称她为大城市的政治家，因为她来自波士顿。
All children know this about mothers, and despise them for it, but make constant use of it.
所有的孩子都知道母亲的这一点，并因此而鄙视她们，但他们却经常利用这一点。
In its first encounter, it might be somewhat honest and unsmiling that it came to know the user it would progress to a more relaxed and intimate style.
在初次接触时，它可能会有些正经和不苟言笑，随着它逐渐了解使用者，它会呈现出更加轻松、亲切的状态。
Each episode will focus on a different area of science and tell us what we know, how we know it, and what we still don't know.
每一集都将聚焦于一个不同的科学领域，告诉我们，我们知道什么，我们是如何知道的，以及我们仍然不知道什么。
Do you know how it is when you see someone yawn and you start yawning too?
当你看到有人打哈欠时，你也会开始打哈欠，你知道这是怎么回事吗?
Once children become capable of answering such questions as "what does it mean to remember?” and "what does it mean to know something?” improvements in memory seem to occur.
一旦儿童能够回答诸如“记得是什么意思吗？”以及“知道某事或某物是什么意思吗？”等问题的时候，可能就会促进并完善他们的记忆。
If we want information, we know where to go, and we can pull it off of resources.
如果我们想得到信息，我们知道哪里获取，我们也可以得到相关资源。
If you must move, don't follow a stream unless you know it, and in that case, you are not lost.
如果你非要走动的话，别顺着溪流走，除非你对它很熟悉。但是如果你很熟悉，那你就不会迷路了。
What it hasn't got is not worth having, and what it doesn't know is not worth knowing.
没拥有的就不值得拥有，不了解的就不值得了解。
"I know it," said Injun Joe; "and this looks like it, I should say."
“我知道，”印第安·乔说，“要我说，这看起来也像。”
We do not even know, for example, how many stars have planets, and we certainly do not know how likely it is that life will arise naturally, given the right conditions.
例如，我们甚至不知道有多少恒星有行星，我们当然也不知道如果有适当的条件，生命自然出现的可能性有多大。
People wanted to know how they had blundered into war, and how to avoid it in the future.
人们想弄清他们怎么会错误地卷入战争，将来如何才能避免这样的事。
I know you're upset, but when all's said and done it isn't exactly a disaster.
我知道你挺沮丧的，但说到底，事情并没什么大不了的。
I did not know who it was, and I entreated him three times either to speak or to go away.
我不知道他是谁，我三次恳求他要么说话，要么走开。
Sometimes you can do your best and it seems like the others don't know you exist.
有时候你可能已经尽力了，但其他人却不知道你的存在。
I know there's a great place where it is quiet and no one bothers you.
我知道有个好地方很安静，没人打扰你。
The universe encompasses all of space and time we know, so it is beyond the realm of the Big Bang model to postulate what the universe beyond our horizon is.
宇宙包含我们所知的所有空间和时间，所以要求用大爆炸模型解释我们视界之外的宇宙超出了这个模型的限定范围。
No matter what level of exposure of smoke you have, your lung cells know it and they are responding.
无论你暴露在何种程度的烟雾环境中，你的肺部细胞都知道并且会做出反应。
I was hoping to get it sooner because like we already have assignments and you know, I mean, I guess I can get it from the library.
我本来想早点拿到的，因为我们已经有作业了，我想我可以从图书馆借到它。
Women want to know what it is and why it is in so many brands of mineral cosmetics.
女性们想知道这是什么，为什么那么多牌子的矿物化妆品都有这成分。
You know it gets harder and harder to win them.
你知道要赢他们会变得越来越难。
There is no beating about the bush, for we know quite well what it was, and have got to tell.
没有必要拐弯抹角，因为我们很清楚那是什么，必须讲出来。
If you do what you like, then you know how it feels to be calm, relaxed and balanced.
当你在做你所喜欢做的事情时，你就能够体会到什么叫平静、放松和平衡。
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