我们的太阳系中的行星不是那些可以通过理论预测其组成的普通行星，而是独特的个体，它们的化学和构造特征都是由它们创造的。
Instead of normal planets whose composition could be predicted by theory, the planets populating our solar system are unique individuals whose chemical and tectonic identities were create.
食物中的许多化学物质是健康饮食的必要组成部分。
Many of the chemicals in food are necessary parts of a healthy diet.
化学（chemistry）这个词来源于“化学的”（chemical），它是一种非常小的东西的例子，其他更大的东西是由它组成的。
The word chemistry comes from chemical, which is an example of one type of the very small things that other bigger things are made of.
面包含有碳水化合物，这是一种由碳、氢和氧组成的化学物质。
Bread contains carbohydrates, which are chemicals made up of carbon, hydrogen, and oxygen.
那化学药物经加热后便分解成其组成的成分。
The chemical dissolves into its constituent parts when heated.
地质学家正在调查位于早期人类化石发现地之下的碳酸盐岩的化学组成。
Geologists are investigating the chemical composition of carbonate rocks that lie beneath the surfaces where early human fossils have been uncovered.
几个研究人员，已经通过核磁共振成像机器开始筛选那些组成爱的化学组合。
A handful of researchers, armed with MRIs, have begun to sift out the chemical mix that makes up love.
证据包括从地球可探测到的小行星的化学组成、周围碎屑颗粒分布、或者温度方面的改变。
Evidence could include changes in the chemical composition of the asteroid, the size distribution of debris surrounding it, or other thermal changes that could be detected from Earth.
迪基博士集合了电气和化学方面的工程师，组成一个研究组，开始合力着眼于那些在室温之下很软的金属和金属合金。
Dr Dickey put together a team of electrical and chemical engineers and, together, they started looking at metals and metal alloys that are soft at room temperature.
众所周知，这个由G碱基和A碱基组成的基因能够影响脑化学，并且研究人员认为它可能以影响人们慷慨行为的方式影响了吝啬行为。
The gene, which comes in ‘G’ and ‘A’ versions, is known to influence brain chemistry and the researchers believed it may do so in a way that affects how generous – or not – we are towards others.
它也会寻找那些在地球上激发生命的碳基的化学组成。
It would also look for the kind of carbon-based chemistry that spurred life on Earth.
众所周知，这个由G碱基和A碱基组成的基因能够影响脑化学，并且研究人员认为它可能以影响人们慷慨行为的方式影响了吝啬行为。
The gene, which comes in 'g' and 'a' versions, is known to influence brain chemistry and the researchers believed it may do so in a way that affects how generous - or not - we are towards others.
一位太空生物学家在《科学》上说这可以“重新定义生命”，因为这是很重要的实验室证据，它表明有机体可以有比以前认为更灵活的化学组成。
This "redefines life" said the astrobiology researchers reporting in Science magazine, because it was laboratory evidence that organisms can be more chemically nimble than previously thought.
土卫六拥有浓厚的大气层和疯狂世界似的气候特征：有毒的风和由碳氢化合物组成的雨水。同时，土卫六海充满着各种复杂的化学成份和有机分子。
Titan, with a thick atmosphere and a bizarro-world form of weather featuring toxic winds and hydrocarbon rain, is home to a mix of complex chemistry, complete with organic molecules.
然而，一些毗邻的建筑组成了一个实验室，里边装有电脑，套色版以及化学和电子设备。
But a new adjoining building houses a laboratory filled with computers, chromatographs, chemical and electronic equipment.
吝啬基因由G碱基和A碱基组成，众所周知能够影响脑化学。
The 'mean' gene, which comes in 'g' and 'a' versions, is known to influence brain chemistry.
汗液几乎全是由水组成，也含有微量的化学元素，包括氨、尿素、盐和糖。
Sweat is also known as perspiration, and it is made almost completely of water, with tiny amounts of other chemicals like ammonia, urea, salts, and sugar.
自然界中有成千上万的分子组成形式和化学反应形式，但构成生命的却只是有限的分子和化学反应。
Nature only USES a restrictive set of molecules and chemical reactions out of many thousands available.
相反，TrES - 2b的大气层由气态钠、钾和三氧化钛这些可以吸收光线的化学物质组成，不过这也并不能为该行星极黑提供解释。
Instead, it has an atmosphere made up of chemicals such as vaporized sodium, potassium and gaseous titanium oxide, which absorb light, but that still does not explain the planet's extreme blackness.
FMO被认为是研究光合能量传递的模式分子，因为它只有7个色素分子组成，而且它的化学特性已经研究的很透彻了。
FMO is considered a model system for studying photosynthetic energy transfer because it consists of only seven pigment molecules and its chemistry has been well characterized.
因此，原理上蛋白质能记录下组成DNA分子的碱基序列（一种带着基因编码的化学“字符”）。
So, in principle, the protein can record the order of the bases (the chemical “letters” that carry the genetic code) which make up the molecule.
他用许多0和1来表示最早期时生命的化学成分(很可能是由腺嘌呤、胸腺嘧啶、鸟嘌呤、胞嘧啶和尿嘧啶组成的化合物)。
He USES zeroes and ones to represent the very first chemical building blocks of life (most likely compounds based on adenine, thymine, guanine, cytosine or uracil).
它们已成为我们现代社会日常生活的组成部分，化学物质存在于杀虫剂、污染物和各类工业废弃物中。
They have become an every day part of our modern day world. Chemicals are present in pesticides, pollution and all kinds of industrial waste.
研究者还发现有氧小组成员中他们血液中一种重要的给大脑施肥的化学物质脑源性神经营养因子有了明显的增加。
The researchers also saw a significant increase in that important brain-fertilizing chemical BDNF in the plasma of those in the aerobic exercise group — but not in the control group.
岩石由矿物构成，矿物像所有物质一样，由各种化学元素组成。
Rocks are made from minerals, which like all matter are composed of individual chemical elements.
然后他们从细菌中提取出dna，利用高解析二次离子质谱技术分析了其中的化学组成，发现DNA中也含有砷。
They also separated out the DNA from the bacteria and analyzed its composition using a technique called high-resolution secondary ion mass spectrometry; the isolated DNA contained arsenic.
对于考古学家来说幸运的是，由化学物质组成的沼泽将尸体保存得非常好，使得考古学家们能深入研究这些不幸的沼泽尸体。
Lucky for archaeologists, the chemical make-up of a bog preserves human flesh very well, allowing them to study the unlucky bog bodies closely.
在我们的星球上，哺育生命的都是些非常普通的元素。首先是烃，组成生命最基本的化合物之一，它仅仅由碳和氢两种化学元素组成。
The elements that give rise to life are hardly unique to our planet.Hydrocarbons, the basic molecules from which known life is built, are made of nothing but hydrogen and carbon.
两个新的化学元素——114号和116号——已经被一个由化学家和物理学家组成的国际性委员会正式承认了。
Two new chemical elements, Numbers 114 and 116, have been officially recognized by an international committee of chemists and physicists.
两个新的化学元素——114号和116号——已经被一个由化学家和物理学家组成的国际性委员会正式承认了。
Two new chemical elements, Numbers 114 and 116, have been officially recognized by an international committee of chemists and physicists.
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