哪些行星可以维持生命的存在？
这是一颗可以维持生命的行星。
浪费食物不仅意味着失去维持生命的营养，还意味着失去宝贵的资源，包括土地、水和能源。
Wasting food means losing not only life-supporting nutrition but also precious resources, including land, water and energy.
相反，财政上的打击落在了那些没有保险的人身上，尤其是那些需要昂贵药物来维持生命的慢性病患者的身上。
The financial blows rain, instead, on the uninsured, especially the chronically ill who need expensive drugs to live.
当我们的太阳后来温度变得更高时，早期细菌持续清除大气中的二氧化碳和甲烷，使地球的气候不至于变得太热而无法维持生命的存在。
When our Sun later became hotter, the continued removal of atmospheric carbon dioxide and methane by early bacteria kept Earth's climate from becoming too hot to sustain life.
他们有足够维持生命的食物。
金融体系仍然处于维持生命的阶段。
It was placed on life support, and it's still on life support.
它们是否拥有能维持生命的行星？
今天维持生命的能量也来源于太阳。
在沙漠地域水是维持生命的必需品。
心脏起著维持生命的重要作用。
这一点就使其成为维持生命的最佳候选人。
氧是维持生命的必要元素。
多数植物是靠着根吸收水分来维持生命的。
Most plants are nourished by water drawn up through their roots.
我们的肺给我们泵入氧气，我们维持生命的气体。
Our lungs fuel us with oxygen, the body's life-sustaining gas.
在短时间内，皮革具有可维持生命的足够营养价值。
因为钱财是一切物质的代表，也是维持生命的要素。
Because money is all the representatives of the materials, also a life sustaining main factor.
然而，对维持生命的治疗的组成目前还没有清楚的界定。
However, there is no clear definition of what constitutes a life-sustaining therapy.
第一个需要解答的问题是一颗行星是否有能够维持生命的条件。
The first question to answer is whether a planet can actually support life.
史密斯博士的技巧是，将病人的铁摄入量减少到维持生命的最低水平。
The trick, Dr Smith suggests, is to cut patients' iron intake to the minimum necessary for survival.
那么，为什么用帮助维持生命的分子来治疗损伤会实际上得到相反的结果呢？
So why would treating injuries with a molecule that fuels life actually do the reverse?
这意味着在需要用药物维持生命的病人中，大约有28%的人可以获得药物。
This means that around 28% of those in need of the life-saving drugs were receiving them.
如不治疗，疟疾可能中断对维持生命的重要器官的供血，从而迅速威胁生命。
If not treated, malaria can quickly become life-threatening by disrupting the blood supply to vital organs.
雨林被称为地球的“肺”，因为它们过滤空气吸收二氧化碳，而排放维持生命的氧气。
Rainforests have been called the "lungs of the Earth," because they filter our air by absorbing CO2, while emitting life-supporting oxygen.
大草原也是食肉动物的家乡--狮子、豹、鬣狗--它们都是以草食动物维持生命的。
The savanna is also the home of meat - eaters — the lion, leopard, and hyena who feed on the grasseaters.
两天以后，我在报上读到那家人最终还是拿掉了维持生命的医疗器械，那位年轻的母亲死了。
Two days later I read in the paper that the family had disconnected the life support and the young mother had died.
在比较对照了多种昆虫后，科学们可以更容易地分析出哪些基因是用于维持生命的，哪些是决定体型的。
Having many types of insects to compare and contrast makes it easier for scientists to parse which genes are responsible for life span or body size.
他们注视着五彩缤纷的结晶，试图揭开青蛙皮肤上生物碱的结构，在电脑上模拟酶的产生，探索维持生命的细胞反应。
They will gaze at colorful crystals, unravel the structures of alkaloids from frog skin, simulate the complex motion of enzymes on computers and study the cellular reactions that fuel life.
他们宣称，藜麦所含的蛋白质与氨基酸配比恰到好处，就维持生命的营养而言，它在植物与动物王国里几乎无与匹敌。
With an exceptional balance of protein and amino acids, quinoa, they declared, is virtually unrivaled in the plant or animal kingdom for its life-sustaining nutrients.
他们宣称，藜麦所含的蛋白质与氨基酸配比恰到好处，就维持生命的营养而言，它在植物与动物王国里几乎无与匹敌。
With an exceptional balance of protein and amino acids, quinoa, they declared, is virtually unrivaled in the plant or animal kingdom for its life-sustaining nutrients.
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