什么化合物？
As with most chemical exploration, it is important to have an idea of what compounds are being searched for in the first place.
大多的化学鉴别情况下，如何发现第一个化合物极为重要。
What the plants pump through the air is a mixture of chemicals known as volatile organic compounds, VOCs for short.
植物通过空气输送的是一种名为挥发性有机化合物（简称VOCs）的化学混合物。
They want to understand what makes such compounds refractory and whether they can be made more or less so.
他们想要知道什么原因导致这些化合物难熔并且是否能被控制等等这些问题。
These chemical compounds are not necessary for the primary survival of the tea plant's cells; they are what is known as secondary compounds.
这些化合物并不是茶树细胞生存所必需的物质，它们被称为次生化合物。
In his wilful way (“I always did just what I wanted to do, ” he said later), he turned to research he had started as a student, at Krakow University, into a class of compounds called benzodiapenes.
出于随性'而为的行事方式（他后来说过,"我一贯只做我想做的事"），他转而研究一类称为苯二效卓的化合物。
Different elements or compounds absorb and emit different colors or wavelengths of light, and by studying a star's spectrum, one can divine what its composition might be.
不同的元素或化合物吸收并释放不同颜色的光波，通过对一个恒星的光谱进行研究，我们能够推测它可能的成分。
They will cry a great deal encouraging mother to do what she knows best: provide a soothing bottle of milk — which only compounds the problem.
他们会经常哭叫，好让母亲喂他们她以为最好的东西——同时也是全部问题之所在：一瓶让人舒心的牛奶。
What happened to the two atmospheric plumes? Well, what goes up usually comes down. In this case, in rain. Dropping the compounds on land—or back in the sea.
这两组空气中的漂浮物会如何演绎呢？呵呵，升起的还是会落下来。这样的话，它们会随着雨，降到地上，或者回到海中。
And, you know, even if people displayed what I would consider to be ideal hygiene practices in swimming pools, there's still going to be some of these compounds that are going to end up in pools.
而且，你知道，即使在泳池里人们展示出我认为的理想的卫生习惯，但一些这样的化合物仍将要出现在泳池里。
They want to understand what makes such compounds refractory and whether they can be made more or less so. They also want to know exactly how viral infections stimulate production of the molecules.
比如，焦博士和他的同事想要绘制一幅更详细、丰富的难降解分子组成、分布图；是什么产生这些难降解混合物，人工能否制造出来；病毒感染究竟是怎样刺激AAPB产生这写难降解混合物的。
What is important to remember is that the formulas represent neutral compounds where the positive and negative charges add to zero.
重要的是记住分子式是代表中性化合物，正负电荷加和为零。
As for what might explain the apples' beneficial effects, researchers singled out two compounds found in the fruit: a carbohydrate known as pectin and a class of antioxidants known as polyphenols.
至于如何解释苹果的这些益处，研究人员在水果中选出两类化合物：一种名叫果胶的碳水化合物和一组多酚类的抗氧化物。
What were the results? How were compounds made and characterized? What was measured?
结果是什么？化合物是怎样合成与表征的？测试方法是什么？
These are what are called volatile organic compounds that include cancer-causing chemicals like benzine, and chemicals that are linked to neurological effects, such as toluene.
这就是我们所说的‘挥发性有机化合物’，例如致癌的‘轻油精’以及影响神经系统‘甲苯’。
So the team developed what they dubbed a "survival cocktail" that included various proteins and other compounds to stop the cells from dying.
所以团队创造了他们称为生存鸡尾酒的东西，包含了各种蛋白质和其他成分阻碍了细胞的死亡。
It is difficult to determine exactly which organic compounds are present in the aquarium and what specific effects they might have on different organisms.
这是很难准确地确定有机化合物是目前在水族馆和，他们可能有不同的生物体什么具体的影响。
This hydro-fracing site has a holding pond from which compounds are allowed to evaporate into the air, and what looks like an old chemical spill.
水利压裂钻探场的一处废料池，工业混合物在那儿慢慢蒸发，融入空气。这是一种古老的处理工业废料的方法。
Why Compounds Are Insoluble and What We Can Do About It?
为什么化合物不溶，我们能做什么？
Why Compounds Are Insoluble and What We Can Do About It?
为什么化合物不溶，我们能做什么？
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