At the height of 8,000 meters, there is only 30% O₂ and the human body can only stand this height for a few days, so it is dangerous for humans to climb higher.
在8000米的高度，只有30%的氧气，人体只能处于这个高度仅几天，所以人类再往上爬是危险的。
Thousands or even millions of tiny machines can be sent into the human body with specific tasks.
成千上万甚至上百万的微型机器可被送入人体执行特定的任务。
The human body is influenced by natural chemicals that produce "a sense of happiness", noted BBC News.
BBC 新闻指出，人体会受到能产生“幸福感”的天然化学物质的影响。
Agriculture differs from the medical science of the human body in that its environment is not a contained one.
由于农业发展不是处于一个封闭环境中，因此它和人体医学有所不同。
Now hair, whatever it is for and wherever it is on the human body, is composed mainly of a protein called keratin.
不管毛发是用来做什么的，也不管它在人体的哪个部位，它都主要由一种叫做角蛋白的蛋白质组成。
Classical Greek statues represented an idealization of the human body and were considered quite beautiful at the time.
古典希腊雕像代表了理想化的人体，这在当时被认为是相当美丽的。
Best of all, bananas provide different things that the human body needs! Bananas grow best in warm places that get lots of rain.
最重要的是，香蕉能提供人体所需的不同东西！香蕉在温暖多雨的地方生长得最好。
The human body can absorb no more than about a quart of water per hour, beyond which the brain can swell dangerously, says Dr. Goldfarb.
戈德法布博士称，人体每小时最多只能吸收大约一夸脱水，如果超过这个限度，大脑就会危险地膨胀。
For example, doctors did not have devices allowing them to go inside the human body to detect health problems or to perform delicate surgery.
例如，医生没有能够进入人体内检测健康问题或进行精细外科手术的设备。
In the cells of the human body itself, in the cells of every organ, of almost every type of tissue in the body, the same thing will happen eventually.
在人体自身的细胞中、在每个器官的细胞中、在人体几乎每一种组织中，同样的事情最终都会发生。
The human body doesn't discriminate between a big stressful event and a little one.
人类的身体不会区分大压力事件和小压力事件。
It makes people less tired, clears heat in the human body and helps people lose weight.
它使人不那么疲劳，清除体内的热量，帮助人们减肥。
It makes people feel less tired, clears heat inside the human body and helps people lose weight.
它使人感觉不那么累，清除体内的热量，帮助人们减肥。
The book focuses on six sections including zoology, the human body and botanics.
该书的主要内容包括生态、人体和植物等六大部分。
During the evolution of the human body, there are over 400 resident flora in our bowels.
在人体进化过程中，肠道内菌丛林立，常居菌种超过四百种。
An experiment in Japan found melatonine can lessen the harm done by radiation to the human body.
日本一项实验显示褪黑素能减轻辐射对人体所产生的危害。
Beards are the fastest growing hairs on the human body.
胡须是身体上生长最快的毛发。
But in many ways, the human body remains a vast and peculiar mystery.
但是在许多方面，人体依然是一个巨大而又古怪的迷。
Close your eyes for a minute and envision all the romantic parts of the human body.
将你的眼睛闭上一会儿，想象一下人体所有浪漫的部分。
In the human body, the parasites multiply in the liver, and then infect red blood cells.
这种寄生虫在人体的肝脏中繁殖，然后感染血红细胞。
Rather, the human body operates as a symphony, producing a behavioral harmony of life.
更确切地说，人类身体如同一曲交响乐一样运转，产生一种生命的动作协调。
And will life expectancy continue to soar, or does the human body come with a built-in limit?
预期寿命将会继续上升吗，抑或人类身体有一个内在的极限？
Some of these can travel through the human body, damaging cells and posing a hazard for humans.
其中一部分能穿透人体，损伤细胞从而对人体构成威胁。
Of course, the human body is the supreme example of the spiritually infused corporeal substance.
当然，人体是被注入了灵魂的，具体物质的最高代表。
This seems especially crazy considering the human body only contains about 10 pints of blood.
这看起来相当的不可思议，人类身体总共只有约10品脱的血液。
Most cells of the human body are irreversibly specialised or "differentiated" into roughly 200 types.
人体中的大部分细胞都不可逆的分化成了约200种类型。
They also said it was difficult to extrapolate results from their laboratory tests to the human body.
他们还表示，很难将他们的实验室测试结果推断出纳米粒子对人体的实际影响。
They also said it was difficult to extrapolate results from their laboratory tests to the human body.
他们还表示，很难将他们的实验室测试结果推断出纳米粒子对人体的实际影响。
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