We know that for the most part.
我们知道在很多方面。
From physics we know that for every action there is an opposite reaction.
从物理中我们知道每个作用力都有它的反作用力。
We know that for most people their resonant frequency is between 7.5 and 4.5 breaths per minute.
我们知道对大多数人来说，他们的共振频率介于每分钟4.5次至7.5次呼吸之间。
We know that mammals, dogs for example, dogs vocalize many different sounds.
我们知道像狗这样的哺乳动物会发出很多不同的声音。
"We still believe in rewarding superior achievements and know that these top students truly value the scholarship," says Scott Friedhoff, Allegheny's vice president for enrollment.
阿勒格尼学院负责招生的副校长斯科特·弗里德霍夫表示：“我们仍然相信奖励卓越成就的做法，我们知道这些优等生真的看重奖学金。”
However, we now know that since oxygen levels were much lower in the Mesozoic than we assumed, there was much less plant life for sauropods to eat than we thought.
然而我们现在知道了，由于中生代空气的含氧量比我们想象的要低得多，所以蜥脚类动物可食用的植物也比我们想象的要少得多。
But really the instrument we know today was the result of a continuing development that started for our practical purposes in the 1920s.
但实际上，我们今天所知道的乐器是在20世纪20年代人们出于实用目的造出来、之后持续发展演变而成的。
We know that as we get older, it's easier for us to get affections.
我们知道，随着年龄的增长，我们更容易患病。
Do you remember all years when scientists argued that smoking would kill us but the doubters insisted that we didn't know for sure?
还记得那些年吗？当初，科学家提出吸烟会导致死亡，而怀疑者们却坚持认为我们还不能确认这一点。
Just as on smoking, voices now come from many quarters insisting that the science about global warming is incomplete, that it's OK to keep pouring fumes into the air until we know for sure.
就像吸烟一样，现在来自许多方面的声音坚持认为，有关全球变暖的科学是不完整的，在我们确定之前，继续向空气中排放烟雾是可以的。
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。
How do we know, for example, that the stars are really huge balls of fire like the Sun and very far away?
比如说，我们怎么知道恒星真的是像太阳一样巨大的火球，而且离我们很远呢？
It might surprise you to learn that restaurants, as we know them, have only existed for a few centuries.
当你得知我们所知道的餐馆只存在了几个世纪，你可能会感到惊讶。
Intrinsically, we all know that whole foods, such as fruit, vegetables, and whole grains are best for us.
从实质上讲，我们都知道天然的食物，比如水果、蔬菜和全谷类是最适合我们的。
We all know that she is not fashioned for a life among strangers.
我们都知道她不适合去陌生人中间生活。
We already know that Justin Bieber and a song from Rent are on tap for Glee this season.
我们已经知道贾斯汀·比伯和《吉屋出租》的一首歌都会出现在这一季的《欢乐合唱团》中。
We know that sleep is important for good physical and mental health.
我们知道睡眠质量对良好的身心健康至关重要。
We all know that asking people for money can be daunting.
我们都知道向别人伸手要钱是很别扭的。
We all know that the reasons for failure are multiple-layered and sometimes have nothing to do with psychology.
我们也知道，失败的因素可能是多层次性的，有时根本和心理素质无关。
We know that external assistance for health has more than doubled since the start of this century.
我们知道，自本世纪初以来，外部卫生援助量翻了一倍多。
We know that exercise is good for us. We are convinced of that, but that doesn't mean we are committed to exercise.
我们知道锻炼对自己有好处，对此深信不疑，但是那并不意味着我们要锻炼。
What we expressed to them is that we know they did not ask for this.
我们向他们表明的就是我们知道他们不要对这件事有什么刻意要求。
We know that God spake unto Moses: as for this fellow, we know not from whence he is.
神对摩西说话，是我们知道的。只是这个人，我们不知道他从那里来。
But deep down inside we know we were made for more than that.
但是深入地想一想，我们知道我们被造不只是那么多。
But now we know that the outlook for the next couple years at least is slow growth.
但现在我们知道至少在接下来的两年，将会是缓慢增长的前景。
One thing we know for sure is that the British economy will suffer its first recession for 18 years in 2009.
头一件我们可以肯定的事就是英国的经济将在2009年经受18年来的第一次衰退。
One thing we know for sure is that the British economy will suffer its first recession for 18 years in 2009.
头一件我们可以肯定的事就是英国的经济将在2009年经受18年来的第一次衰退。
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