Athletes and scientists have long known that meal timing affects performance.
运动员和科学家早就知道，用餐时间会影响成绩。
Mothers have long known that their home workload was just as heavy as paid work.
母亲们早就知道，她们的家庭工作量和带薪工作一样繁重。
Scientists have long known that bees carry a sort of wrist watch inside their bodies.
科学家早已知道，蜜蜂在体内携带着某种手表。
It has long been known that the level of serum iron in animals falls during infection.
人们早就知道，在感染期间，动物的血清铁水平会下降。
Since 1914, scientists have known that birds flying in formation—a V-shape—expend less energy.
自1914年以来，科学家们已经知道，以V字形队形飞行的鸟类消耗的能量更少。
For thousands of years, people have known that the best way to understand a concept is to explain it to someone else.
几千年来，人们都知道，理解一个概念的最好方法就是向别人解释它。
It is long known that Earth's orbit around the Sun changes periodically, cyclically affecting the way solar radiation strikes the Earth.
人们早就知道，地球围绕太阳的轨道会周期性地变化，周期性地影响太阳辐射照射地球的方式。
It has long been known that a taxi firm called AAAA cars has a big advantage over Zodiac cars when customers thumb through their phone directories.
人们早就知道，当顾客翻阅电话簿时，AAAA汽车公司比Zodiac 汽车公司有很大的优势。
It is widely known that CFCs can damage the ozone layer.
众所周知氯氟烃会破坏臭氧层。
The president has let it be known that he is against it.
总统已经明确表示，他反对此事。
The terrorists made it known that tourists would be targeted.
恐怖分子宣称游客将成为他们袭击的目标。
It is well-known that bamboo shoots are a panda's staple diet.
众所周知，竹笋是熊猫的主要食物。
Subconsciously I had known that I would not be in personal danger.
下意识地，我已经知道了我将不会有人身危险。
The President has let it be known that he does not intend to run for election again.
总统已经公开表示他不打算再次参加竞选。
It's known that failure is the mother of success.
众所周知，失败乃成功之母。
Ten-year-old Orion Jean has always known that kindness is important.
10岁的奥瑞恩·吉恩一直深谙善良的重要性。
It is widely known that more and more foreigners are learning Chinese culture now.
众所周知，现在越来越多的外国人正在学习中国文化。
It's well-known that they are regarded as junk food, but they are a real "hunger killer".
大家都知道它们被认为是垃圾食品，但它们是真正的“饥饿杀手”。
Without chemistry, we would never have known that we need soap to get the oil out of clothes.
如果没有化学，我们永远不会知道我们需要肥皂来去除衣服上的油污。
She had known that Monica would make it when she bravely took her first step to overcome her fear of speaking in public.
当莫妮卡勇敢地迈出第一步来克服她对当众演讲的恐惧时，她就知道莫妮卡会成功。
You may have already known that some famous people, like Thomas Edison and Steve Jobs, didn't do very well at school or even failed to finish school.
你可能已经知道一些名人，如托马斯·爱迪生和史蒂夫·乔布斯，他们在学校成绩并不出色，甚至未能完成学业。
It has been known that both animals and humans are willing to take a risk to satisfy their curiosity despite knowing that the result will remain unchanged.
众所周知，尽管知道结果不会改变，动物和人类都愿意冒险来满足好奇心。
他应该知道这件事的。
The Mole would not have known that it was the same wood.
鼹鼠莫尔都认不出这是之前同一片树林。
"It was always known that the body accumulates damage," he added.
“众所周知，人体机能损伤是会累积的。”他补充道。
Twon't ever be known that we tried, anyway, long as we didn't succeed.
不管怎样，只要我们没有成功，就永远不会有人知道我们曾经努力过。
We should have known that long-distance trains are often many hours late.
我们早应该知道长途火车经常会晚点好几个小时。
When it became known that the old fox was dead, suitors presented themselves.
当大家知道老狐狸死了以后，求婚者就出现了。
Already it is known that bones, muscles and nerves develop faster in baby girls.
众所周知，女婴的骨骼、肌肉和神经发育得更快。
It is well known that when gas is cooled at a constant pressure its volume decreases.
众所周知，当气体在定压下冷却时，它的体积减小。
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