Tetrahydrofolate(THF) cofactor is the carrier of one-carbon unit on biosynthesis and cell metabolize.
四氢叶酸（THF）辅酶是生物合成与细胞代谢的过程中一碳单元转移的载体。
Conclusion: lower folate, lower vitamin B12 and raised homocysteine levels predicted incident depression, supporting an aetiological role of one-carbon metabolism.
结论：低叶酸、维生素b12水平和高同型半胱氨酸水平与随访中抑郁的发生相关，支持单碳物质代谢与抑郁的病因相关。
Isoflavones are widely occurring compounds, which have a series of biological activities. Thesyntheti (?). Methods of isoflavones by using one-carbon synthons to deoxybenzoins were pre-sented.
异黄酮是一类分布广泛，且具有一系列生理活性的化合物。概述了由脱氧安息香引入一个碳原子合成异黄酮的方法。
One of the more conservative plans for addressing the problem calls for a reduction of 25 billion tons of carbon emissions over the next 50 years.
为解决这一问题，一项较为保守的计划要求在未来50年内减少250亿吨碳排放。
Graphene is a flat sheet of carbon just one atom thick—with the carbon atoms arranged in a honeycomb lattice.
石墨烯是一种只有单原子厚度的碳原子平面层——碳原子按蜂窝状晶格排列。
A tax on upstream carbon sources is one easy way to put a price on carbon emissions, although some countries may wish to use other methods, such as emissions trading schemes.
对上游碳资源征税是为碳排放定价的一种简单方法，尽管一些国家可能希望使用其他方法，例如碳排放交易计划。
The secret of the machine lies in the aerodynamic shape of the one-piece, carbon-fibre frame.
该机器的秘密在于其一体式碳纤维外壳的流线型设计。
You know, in the other European reports I've read, there's one thing they have in common when they talk about carbon dioxide emissions.
你知道，在我读过的其他欧洲报告中，他们在谈论二氧化碳排放时有一个共同点。
They forget about one of the key causes of carbon dioxide.
他们忘记了二氧化碳产生的其中一个关键原因。
If current trends continue, by the year 2010 carbon emissions in the United States will soar to a level more than one-third higher than were those in 1990, according to official projections.
根据官方预测，照目前的趋势，到2010年，美国的碳排放将飙升至比1990年高出三分之一以上的水平。
The climate change we are hastening could one day leave us with forests that emit more carbon than they absorb.
因人类而不断加剧的气候变化或许终有一日让森林的碳排放量超过其吸收量。
To grow and eat a pound of potatoes sends less than one-quarter pound of carbon dioxide into the air.
种植和吃掉一磅土豆，向空气中排放的二氧化碳不超过四分之一磅。
The three most important nutrient recycles are the nitrogen cycle, the carbon cycle and the one we are going to talk about today, the Phosphorus cycle.
这三种最重要的营养循环包括氮循环、碳循环和我们今天要讲的磷循环。
The molecules of carbon dioxide in the Earth's atmosphere affect the heat balance of the Earth by acting as a one-way screen.
地球大气层中的二氧化碳分子像一个单向屏一样影响着地球的热量平衡。
Doctors Stevenson is analyzing one element—carbon-14 in ring from both living and dead trees.
史蒂文森博士正在分析一种元素——活树和死树年轮中的碳-14。
Carbon dioxide (二氧化碳) is one gas that traps heat.
二氧化碳是能保存热量的气体。
Ziram was synthesized in an one-step with aqueous solution of dimethylamine carbon disulfide and zinc oxide.
以二甲胺水溶液、二硫化碳和氧化锌为原料一步合成了福美锌。
An easy one is acetone. And carbon disulfide.
简单的一个是丙酮，还有二硫化碳。
However, getting one carbon atom to bind to another is often not an easy task.
然而让碳原子一个一个结合通常不是件容易的事。
A methyl group is a basic unit in organic chemistry: one carbon atom attached to three hydrogen atoms.
甲基是有机化学的基本单位：一个碳原子连接三个氢原子。
The challenge is to take a molecule of methane, the main component of natural gas consisting of one carbon atom and four hydrogen atoms, and turn it into something bigger.
天然气的主要成分是甲烷，它含有一个碳原子和四个氢原子，这项转化的关键是把一个甲烷分子变大。
As one of Earth's great carbon sinks, the replacement of Amazon jungles with savannah or forest would drastically accelerate global warming.
作为地球上最大的碳储存库，亚马逊丛林被草原或森林替代之后将大幅加速全球变暖的过程。
ONE of the curiosities of carbon markets is that they do not just trade in carbon.
碳市场的奇怪之处在于，可以交易的不仅是碳。
One is a carbon tax, which this paper has long advocated.
一个是征收碳排放税，这也是《经济学人》杂志长期以来所提倡的。
One consequence would be that squishy, carbon-based life would not exist.
结果之一便是这种粘糊糊的、以碳为基础的生活将不复存在。
The trio made outstanding contributions in organic chemistry, a field whose basis is carbon, one of the essential atoms of life and also of innumerable industrial synthetics.
三位科学家为有机化学做出了杰出的贡献，有机化学是一个基于碳原子的领域，而碳原子是生活中和无数工业合成制品中必不可少的原子之一。
Another proposal flows logically from this one: carbon rationing.
该系统的另一项建议是从上面这个建议逻辑推导出来的：碳配给制度。
So that leaves each carbon with only one hybrid orbital left.
这样每个碳原子只剩下一个杂化轨道。
OF ALL the blights afflicting the sea, carbon dioxide is just one.
在所有正折磨着大海的破坏分子中，二氧化碳只为其一。
Many scientists believe carbon dioxide is one of the main reasons climate change is accelerating.
许多科学家相信，二氧化碳是造成气候变化速度加快的主要原因之一。
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