成为多细胞生物意味着氧需要通过细胞而不只是通过机体的表面。
Being multicelluar means oxygen has to get to cells not on the surface of the organism.
大脑需要持续的供氧。
无氧运动是一种爆发型运动，运动完后需要休息一段时间。
Anaerobic exercise is a powerful burst of movement followed by a period of rest.
科学家指出，为了变得更加聪明一些，人类大脑将需要大量额外的能量和氧- - -但这些我们都无法再加码了。
They claim that in order to become any more intelligent the human brain would need vast amounts of extra energy and oxygen - and we simply cannot provide it.
今天，我们需要保护灵长类，是为了明天的森林能够吸收大气中的二氧碳，防止土壤侵蚀。
We need to protect primates today in order to have forests tomorrow that can absorb carbon dioxide from the atmosphere and prevent the erosion of soil.
这颗小行星将需要具备水使殖民者可以提取氢和氧的火箭燃料。
The asteroid would need to posses water so that colonists could extract oxygen and hydrogen for rocket fuel.
4- 6分之间的婴儿常常需要进行呼吸复苏，一般为其清理呼吸道和供氧。
Those who score between 4 and 6 often need resuscitation, which generally includes suctioning their airways and administering oxygen.
这个反应是需要水分子的，且氧原子是来自水分子；其余的水分子变成仍有用的一对氧原子。
(the reaction takes place with water molecules, and the oxygen comes from the water; the rest of the water molecule becomes a pair of hydrogen atoms, which is also useful).
德国比勒菲尔德大学从事微生物研究工作的的Olaf Kruse如是说，但是这些微生物需要在严格的厌氧条件下才能工作。
But these other microbes need strict anaerobic conditions to work.
这种依靠人工的将水分离成氢和氧的过程也是需要消耗能量的。
Instead it has to be manufactured by splitting water into hydrogen and oxygen, a process that consumes energy.
构成地球生命需要六项基本要素：碳、氢、氮、氧、硫、磷。
Life on Earth requires six basic ingredients-carbon, hydrogen, nitrogen, oxygen, sulfur and phosphorus.
休息会让你心跳减慢和需要更多的血，氧，神经传递素，和肾上腺素来刺激你的感觉和大脑皮层。
By relaxing you slow down the heart and keep much-needed blood, oxygen, neurotransmitters, and adrenaline from stimulating your senses and cerebral cortex.
当潮汐退却时，需要氧气的微生物，我们物为好氧菌可以呼吸繁殖。
When the tide is out, bacteria that use oxygen, called aerobic bacteria, can breathe and flourish.
虽然大脑代谢与血氧动力学的关系还没有完全理解，但可以认为运送更多的氧气需要更多的血流量。
More oxygen requires more blood flow, although the connection between cerebral metabolism and hemodynamics is not fully understood yet.
在这种病例中，医生就需要注意检测病人是否有低血氧的症状。
In these cases, a test revealing low blood oxygen may alert doctors.
需氧增高性缺血引起的可觉察的暂时IMA水平变化的机制需要一个解释。
The mechanism for detectable transient changes of IMA in response to demand ischemia requires elucidation.
阿波罗飞船使用燃料电池技术(航天飞机也使用燃料电池技术)，使用燃料电池技术需要在整个行程中携带氧和氢。
Apollo used fuel cell technology (as does the space shuttle), which requires oxygen and hydrogen be carried along for the ride.
画它的骨架结构很容易，因为它们都是氧原子，我们不需要担心哪个原子在中间的问题。
It's easy to write the skeletal structure, because it's all oxygen, we don't have to worry about what's going to go in the middle.
充血性心力衰竭是心脏不能够泵出足够的氧合血以满足身体其他器官的需要的一种病态。
Congestive heart failure is a condition in which the heart cannot pump enough oxygenated blood to meet the needs of the body's other organs.
呼吸作用能够为细菌提供更大的能量，但这个过程需要氧，而内脏里氧气稀薄，因此大多数细菌都是利用发酵作用来分解上述物质的。
But it requires oxygen, which is sparse in the gut. So most bacteria go the fermentation route.
为了马上满足给无氧运动中最需要血的肌肉即刻供血要求，你的身体给肝脏和肾脏这样的重要器官的供血便会减少并转向分流。
In order to supply the immediate demand for blood that anaerobic exercise requires for the muscles that need it most, your body shunts blood from critical organs like your liver and kidneys.
真菌是好氧微生物，这就是说他们的生长需要氧气。
Fungi are aerobic microorganisms, that is, they need oxygen for their growth.
结果为了满足更大的能量需要，人体自动切换到使用葡萄糖的无氧代谢。
As a result the body switches to anaerobic metabolism utilizing glucose to satisfy the demand for much needed energy.
因为你的神经系统需要使用三分之二的血糖，无氧运动所造成的血糖不足将引起诸如头痛，神志昏眩之类的神经肌问题。
Since your nervous system demands the use of two-thirds of your blood sugar, the deficit created by anaerobic exercise can cause neuromuscular problems like headaches or disorientation.
使用硫酸盐和二氧化碳时，需要严格的厌氧条件。
The use of sulfates and carbon dioxide requires strictly anaerobic conditions.
使用硫酸盐和二氧化碳时，需要严格的厌氧条件。
The use of sulfates and carbon dioxide requires strictly anaerobic conditions.
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