An increasing body of evidence suggests that all of us have cancer cells in our bodies at times during our lives.
越来越多的证据表明在一生中我们所有人有时在体内都会出现癌细胞。
What is not certain is whether we should follow, or be suspicious of, what our bodies are telling us.
不确定的是，我们是否应该遵循或怀疑我们的身体告诉我们的东西。
He listened, and heard an ant-king complaint: "Why cannot folks, with their clumsy beasts, keep off our bodies?"
他听着，听到了一个蚂蚁王的抱怨：“为什么人们带着他们笨拙的牲畜，不能远离我们的身体呢？”
This is the complete cycle our bodies are naturally geared to undergo within the passage of a twenty-four-hour day.
这是我们的身体在一天24小时内要自然经历的完整周期。
This is the complete cycle that our bodies are naturally geared to undergo within the passage of a twenty-four hour day.
这是我们的身体在一天24小时内自然调整经历的完整周期。
When we do the same movements with our bodies over and over again, we overuse some muscles and that overuse can lead to strain and injury.
当我们的身体一遍又一遍地做同样的动作时，会过度使用一些肌肉，从而导致劳损和受伤。
They believe such a diet which includes no products from animal sources can be deficient in many of the necessary vitamins and minerals our bodies need.
他们认为，这样的饮食不包括任何动物来源的产品，会缺乏我们身体所需的许多必要的维生素和矿物质。
Though the precise harm to our bodies remains unknown, concerns include the microplastics themselves, as well as the fact that they absorb a range of harmful bacteria.
虽然微塑料具体会对我们身体造成怎样的伤害尚不明确，但微塑料本身和他们吸收了大量的有害细菌这一事实让我们忧心忡忡。
The flavor-sensing system, ever receptive to new combinations, helps to keep our brains active and flexible, it also has the power to shape our desires and ultimately our bodies.
味觉感应系统永远接受新的气味组合，这有助于让我们的大脑保持活跃和灵活，它也具有改变我们的欲望并最终塑造我们的身体的能力。
Thus our bodies continuously exchange old substance for new, just like a spring which more or less maintains its form and movement, but in which the water molecules are always different.
因此，我们的身体不断地把旧物质替换成新的，就像一个喷泉，或多或少地保持着它的形式和运动，但其中的水分子总是不同的。
These reactions influence how our genetic code is expressed: how each gene is strengthened or weakened, even turned on or off, to build our bones, brains and all the other parts of our bodies.
这些反应影响着我们的遗传密码的表现方式：每个基因是如何被加强或削弱，甚至其作用机制是如何被打开或关闭，从而构成我们的骨骼、大脑以及身体的其他部位的。
Each cell of our bodies contains 46 chromosomes.
我们体内的每个细胞都有46条染色体。
It also makes sure that our bodies work properly.
它还能确保我们的身体正常工作。
Our bodies are made up of about 76% water.
我们的身体大约有76%的部分是由水组成的。
Is it something that nature has built into our bodies?
这是自然融入我们身体的吗？
Is it possible to pay by scanning other parts of our bodies?
有可能通过扫描身体的其他部位来支付吗？
Of course, too much stress is harmful to our bodies and minds.
当然，太多的压力对我们的身心是有害的。
Most people think that nature is good for our bodies and brains.
大多数人认为大自然对我们的身体和大脑有好处。
When we eat food, our bodies use the food to make energy.
当我们进食时，我们的身体利用食物来制造能量。
Smaller plastic pieces can also enter the food chain and end up in our bodies.
更小的塑料碎片也可以进入食物链，最终留在我们的身体里。
He said that we should all appreciate our bodies and the miracle of how they are built.
他说，我们都应该欣赏自己的身体，欣赏身体奇迹般形成的过程。
Space also has high levels of radiation, energy that can pass through our bodies and make us sick.
太空也有高等级的辐射，其能量可以穿过我们的身体，让我们生病。
Most viruses can be found and killed by our immune system as soon as they enter our bodies.
大多数病毒一进入我们的身体，就会被免疫系统发现并杀死。
In the next stage—REM sleep—we begin to breathe faster and our eyes move around quickly, but our bodies do not move.
下一个阶段又称为快速眼动睡眠阶段，我们的呼吸开始加快，眼球也开始快速跳动，但我们的身体却保持不动。
If we are eating the correct food and the correct amount of the food, we will have enough energy for our bodies and minds to work properly.
如果我们食用正确的食物和正确数量的食物，我们将有足够的能量让我们的身体和大脑正常工作。
Students must know the value of exercise because it plays a necessary part in counterbalancing the stress responses produced in our bodies by having to meet exams.
学生们必须知道锻炼的价值，因为它对平衡我们体内因面临考试而产生的压力反应起着必要的作用。
However, if the plastics are small enough, they can find ways into our bodies and stay there for a long time, which can be bad for our health.
然而，如果塑料足够小，它们可以找到进入我们身体的途径，并长时间停留在体内，这对我们的健康不利。
One thing that physiologists have learned is that without gravity our bodies begin to lose strength, leaving astronauts with weakened bones, muscles and cardiovascular systems.
生理学家发现，失去重力后身体会失去力量，这使得宇航员骨质疏松、肌肉松弛，心血管功能也相应退化。
Drinking water helps our bodies in a variety of ways.
喝水在许多方面都有助于我们的身体。
Our minds, no less than our bodies, require periods of fasting.
不只是我们的身体，我们的思想也需要禁食一段时间。
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