细菌的能量代谢是以化学营养为基础的。
这减缓了植物的新陈代谢，保护了其干枯的组织。
That slows the plant's metabolism and protects its dried-out tissues.
我们通过改变代谢率、颤抖或出汗来达到这一目的。
We do this by altering our metabolic rate, shivering or sweating.
当鲸鱼潜水时，它的新陈代谢率下降，导致心跳减慢。
When a whale dives, its metabolic rate drops, causing its heartbeat to slow down.
它可能通过食欲控制激素的活动来干扰身体的新陈代谢。
It interferes with the body's metabolism, possibly via the activity of an appetite-controlling hormone.
现代鸟类拥有比最敏捷的的迅猛龙还要高的新陈代谢率。
Modern birds have higher metabolism rates than even the most agile Velociraptor ever had.
第一种是自发的新陈代谢系统，它的控制集中在脑干上。
The first is an automatic, metabolic system whose control is centered in the brain stem.
更大的体重意味着代谢成本增加，导致了夜间体重损失增加。
The increased metabolic cost of possessing higher body mass contributes to the increased overnight mass loss.
“耐旱”植物和这些顽强植物之间的一大区别在于：新陈代谢。
The big difference between "drought-tolerant" plants and these tough plants: metabolism.
与寿命相比，这种关系是“反向的”：生物体越大，其代谢率越低。
In comparison to the life span this relationship is "inverted": the larger the organism the lower its metabolic rate.
一旦开始生长，这些植物似乎就不再具有暂停其茎叶新陈代谢的能力。
Once they start growing, such plants seem not to retain the ability to hit the pause button on metabolism in their stems or leaves.
就像寿命一样，不同生物的新陈代谢率与身体质量有着固定的数学关系。
Like the life span, the metabolic rate has for different organisms a fixed mathematical relationship to the body mass.
体型大的动物比体型小的需要更多食物，但体型小的动物有更高的代谢率。
Larger animals require more food than smaller animals, but smaller animals have a higher metabolic rate.
它能忽略或凌驾于自动的新陈代谢系统之上，并产生不规则的的呼吸模式。
It is capable of ignoring or overriding the automatic, metabolic system and produces an irregular pattern of breathing.
然而，一旦它们开始生长，这些植物似乎就无法阻止其茎或叶的新陈代谢的能力。
Yet once they start growing, such plants seem not to retain the ability to hit the pause button on metabolism in their stems or leaves.
在睡眠期间，自动的新陈代谢系统对血液中二氧化碳和氧气的含量反应并不灵敏。
During sleep the automatic metabolic system is less responsive to carbon dioxide levels and oxygen levels in the blood.
这种代谢消耗可能是由于唱歌或与唱歌相关的行为中涉及的肌肉和神经活动所产生的。
This metabolic cost may arise from the muscular and neural activity involved in singing or from behaviors associated with singing.
一些科学家认为，许多种类的恐龙的新陈代谢更像温血哺乳动物，而不是冷血爬行动物。
Some scientists contend that many species of dinosaur had a metabolism more like a warm-blooded mammal's than a cold-blooded reptile's.
这种由遗传决定的休眠期被称为滞育，其特征是发育和蛋白质合成的停止以及代谢率的抑制。
This genetically determined resting stage, characterized by the cessation of development and protein synthesis and suppression of the metabolic rate, is called diapause.
氧气在细胞呼吸的新陈代谢过程中是必不可少的，它能使细胞有效地从有机食物中获取能量。
Oxygen is essential for the metabolic process known as cell respiration that allows cells to efficiently harvest energy from organic food.
甲状腺位于颈部的底部附近，是一个很大的内分泌腺体，它产生激素，协助控制生长和新陈代谢。
Located near the base of the neck, the thyroid is a large endocrine gland that produces hormones that help control growth and metabolism.
这个谜题的答案在于早期光合生命形式的新陈代谢活动，这种活动缓慢但一定改变了地球大气的化学成分。
The answer to this riddle lies in the metabolic activity of early photosynthetic life-forms that slowly but surely transformed the chemical composition of Earth's atmosphere.
它们缺乏储水结构，而且它们长在岩石表面，这阻止了它们利用地下水，所以它们反而形成了改变新陈代谢的能力。
They lack water-storing structures, and their existence on rock faces prevents them from tapping groundwater, so they have instead developed the ability to change their metabolism.
棱皮龟显然不把热量当作新陈代谢的副产品，以我们产生内部热量的方式，或者鸟类产生内部热量的方式来产生出来。
Leatherbacks apparently do not generate internal heat the way we do, or the way birds do, as a by-product of cellular metabolism.
当它们发现干旱期延长时，它们会改变自己的新陈代谢，在它们的组织中产生糖和某些与应激相关的蛋白质和其他物质。
When they detect an extended dry period, they divert their metabolisms, producing sugars and certain stress-associated proteins and other materials in their tissues.
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