在理解嗅觉的生物学和化学性质方面已经有了重大进展，但许多基本问题仍有待回答。
Significant advances have been made in the understanding of the biological and chemical nature of olfaction, but many fundamental questions have yet to be answered.
由于香烟中的尼古丁会改变大脑的化学性质，从而可能影响情绪，因此吸烟可能会导致青少年抑郁。
Since nicotine in cigarettes changes brain chemistry, perhaps thereby affecting mood, it is likely that smoking contributes to depression in teenagers.
我们会观察土壤的化学性质——比如某个地方的土壤里有多少氮或者镁——然后与附近土壤的化学性质作比较。
We look at soil chemistry—for example, how much nitrogen or magnesium there is in the soil in one spot—and we compare it with the chemistry of the soil a short distance away.
居里夫人现在的名气到达顶峰，从1922年开始，她是医学学会的成员，研究放射性物质的化学性质及其医学应用。
Marie Curie, now at the highest point of her fame and, from 1922, a member of the Academy of Medicine, researched the chemistry of radioactive substances and their medical applications.
这两位化学家都非常有远见，他们对周期性的物理性质和化学性质进行分析，并在预示应该出现新元素的地方留下了空位。
Both chemists were sufficiently farsighted to leave gaps where their analyses of periodic physical and chemical properties indicated that new elements should be located.
他对金属的化学性质知之甚多。
它们的化学性质不活泼。
简要介绍了物理和化学性质的生活必须开始。
A summary of the physical and chemical nature of life must begin.
对我说我们不应该使用所有这些化学性质的香波。
Told me about how we shouldn't even be using all those chemically laden shampoos.
这些孤对电子相互作用，改变了碳原子的化学性质。
The lone-pair interactions change the chemical characteristics of the carbon.
-对我说我们不应该使用所有这些化学性质的香波。
- told me about how we shouldn't even be using all those chemically laden shampoos.
铯- 137很容易与水混合，其化学性质很像钾。
Cesium-137 mixes easily with water and is chemically similar to potassium.
在化学性质上它与钙相似，趋于进入人的骨骼和牙齿。
Because it behaves chemically like calcium, it tends to concentrate in the bones and teeth.
我们做了所有这样的事，以了解一个分子的化学性质。
We do all of this to understand the chemistry of one molecule.
要成功地减肥，了解您的食物的基本化学性质是有用的。
To lose weight successfully, it's useful to understand the basic chemistry of your food.
在化学性质相似的同族元素中，质量越重带的正电越强。
In all groups of chemically similar elements the heaviest are the most electropositive.
砷破坏了代谢通路，因为在化学性质上它表和磷差不多。
Arsenic disrupts metabolic pathways because chemically it behaves similarly to phosphate.
得到31英尺长的岩芯样本后，再分析它们的化学性质和磁性。
The 31-foot-long core samples are analyzed for their chemical and magnetic properties.
该研究发现，碳吸附能力的减弱来源于各大洋化学性质的变化。
The slowdown in the rise of the absorption rate resulted from a gradual change in the oceans’ chemistry, the study found.
你身体的一部分将在空气中飘散，去改变其他人的液体化学性质。
Part of you will go airborne, off to change the water chemistry of others.
他所做的，实际上他是根据元素的化学性质，来对它们进行归类的。
And what he did what he actually grouped things in terms of their chemical properties.
较重的稀有气体具有较低的电离势，这也可以解释它们的化学性质。
The low ionization potentials of the heavier gases also account for their chemistry.
在元素周期表中，砷就位于磷的下面，二者具有很多相同的化学性质。
Arsenic sits right beneath phosphorus in the periodic table of the elements and shares many of its chemical properties.
只有外层内的电子才会形成化学键，因此每一列中各元素化学性质均相似。
Only electrons in the outer shell can form chemical bonds, so the elements in each column are chemically similar.
环境中化合物的化学性质，比最好的化学家制造出来的化合物还要复杂很多。
The chemistry from compounds in the environment is orders of magnitude more complex than our best chemists can produce.
正如学校化学课中展示的那样，金属镁化学性质非常活泼，储存着大量能量。
As school chemistry lessons show, metallic magnesium is highly reactive and stores a lot of energy.
其他军用化学品的化学性质，包括控暴剂、除草剂、烟火化学品的相关综述文章。
Chemistry of Other Military chemical Compoundsincludes reviews on riot control agents, herbicides, and flame and smoke-producing chemicals.
以化学元素表来衡量，地球的化学性质是不正常的，完全失去了平衡，却充满活力。
The chemistry of the Earth was out of kilter, wholly unbalanced by the periodic table, and alive.
以化学元素表来衡量，地球的化学性质是不正常的，完全失去了平衡，却充满活力。
The chemistry of the Earth was out of kilter, wholly unbalanced by the periodic table, and alive.
应用推荐