眼睛是人体最娇贵的器官之一。
人体主要由骨、肌肉和脂肪组成。
人体对疾病具有先天性防御机制。
The body has natural defence mechanisms to protect it from disease.
胰岛素使人体能够利用和贮存糖分。
持枪歹徒用人质作人体盾牌。
科学家们对于人体使用酶疗法持谨慎态度。
The scientists are cautious about using enzyme therapy on humans.
12种潜在疫苗目前正在人体志愿者身上测试。
Twelve potential vaccines are currently being tested on human volunteers.
该疗法只有在动物身上证明安全、万无一失后才会在人体上试用。
The treatment will be tried out on human beings only after it has been shown to be safe and foolproof in animals.
多亏有了光纤，如今才能够照见人体中许多最微小的器官和最暗的腔体。
Thanks to fibre optics, it is now possible to illuminate many of the body's remotest organs and darkest orifices.
那些宇航员正在进行一系列实验，以便更多地了解人体如何适应失重状态。
The astronauts are conducting a series of experiments to learn more about how the body adapts to weightlessness.
汽油仍然含有铅，对人体有剧毒。
Gasoline still contains lead, which is extremely poisonous to humans.
天气变热时，高温会影响人体健康。
为了了解肩膀，看一下人体骨架。
我的主要任务是分析人体排泄物。
本周生物学的主题是人体。
该公司形容这种工序为“人体复印机”。
The company describes its process as a ''human photocopier''.
这水平并不对人体健康构成立即的威胁。
The levels do not pose any immediate danger to human health.
人体是一台能提出许多有趣问题的机器。
The human body is a machine that can raise lots of interesting questions.
人体也需要这样的平衡。
针灸师可能会说，人体有800多个穴位。
Acupuncturists may say that the body has more than 800 acupuncture points.
它们是由人体产生的。
低重力如何影响人体。
这样的一种物质是如何对人体产生影响的呢？
医生研究人体构造。
细菌留在了人体内。
水对人体很重要。
我们的研究表明，这与改变人体内部的生物钟有关。
Our research suggests it has something to do with shifting the body's internal clock.
“众所周知，人体机能损伤是会累积的。”他补充道。
"It was always known that the body accumulates damage," he added.
快乐对人体的益处可能并不像研究人员认为的那样多。
Happiness may not be as good for the body as researchers thought.
但是他们只是驶过，把人体交通标志看作理所当然的事。
But they just pass by, taking the human traffic signal for granted.
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