Petrol is a volatile substance.
汽油是挥发性物质。
This substance has now been cloned by molecular biologists.
这种物质现已被分子生物学家克隆。
It's questionable whether anything of substance has been achieved.
是否已取得任何实质性的进展值得质疑。
Propolis is a hard resinous substance made by bees from the juices of plants.
蜂胶是蜜蜂用植物汁液合成的像树脂一样的坚硬物质。
The infinitely adaptable substance has its dark side.
这种具有极强适应性的物质也有其黑暗的一面。
It makes up the body and substance of all musical activity.
它构成了所有音乐活动的主体和实质。
Every chemical substance is a key to the gates of heaven and hell.
每一种化学物质都是一把打开天堂和地狱之门的钥匙。
We can distinguish one kind of substance from another by its properties.
我们可以根据物质的特性把一种物质与另一种物质辨别开来。
Genius and giftedness are relative descriptive terms of no real substance.
天才和天赋只是对没有实质内容事物的相对描述。
To this class of substance belong mica, porcelain, quartz, glass, wood, etc.
属于这类物质的有云母、瓷器、石英、玻璃、木材等等。
Tears shed because of exposure to cut onion would contain no such substance.
因为切洋葱而流出的眼泪就不会含有这种物质。
As I said, it's a particularly hazardous substance and is worked with in fume hoods.
就像我说过的，这是尤其有害的物质，在通风柜中才能用。
The bag is attached to a spout and filled with a powdered substance that turns into a gel.
这种袋带有一个喷嘴，里面装满了一种能够变成胶状的粉末物质。
There is no consensus among researchers regarding what qualifies a substance as a pheromone.
对于什么物质能被称为是信息素，研究人员并没有达成共识。
Every substance, no matter what it is, is composed of very small particles called molecules.
各种物质，不论它是什么，都是由一些称为分子的很小的粒子构成的。
This addition of a chemically precipitated substance into pore spaces is termed "permineralization".
这种化学沉淀物质进入孔隙的过程被称为“完全矿化”。
Caffeine, the stimulant in coffee, has been called "the most widely used psychoactive substance on Earth".
咖啡中的咖啡因因被称为“地球上使用最广泛的精神活性物质”。
Rather than portraying landscape, land artists used the physical substance of the land itself as their medium.
地景艺术家使用土地本身的物质作为媒介，而不是描绘风光。
The gooey substance produced by mixing cornstarch with a little water is a commonplace example of such material.
玉米淀粉和少量水混合后产生的粘稠物质就是这种物质的常见例子。
This combination is unstable and quickly rearranges itself into a stabler, but still reversible, substance known as an Amadori product.
这种混合物是不稳定的，会迅速重新排列成一种稳定但仍然可逆的物质，这种物质被称为阿马多里产物。
Not only do tears keep your eyes lubricated, but they also contain a substance that kills certain bacteria so they can't infect your eyes.
眼泪不仅能使你的眼睛保持湿润，它们还含有一种物质，可以杀死某些细菌，使它们不会感染你的眼睛。
These microplastics included a substance commonly known as PET and widely used in the manufacture of clothing and food and liquid containers.
这些塑料微粒包括一种通常被称为PET的物质，广泛用于服装、食品和液体容器的制造。
Once man came to be seen as developing in the process of evolution, the idea of a substance which is contained in his essence seemed untenable.
一旦人类被看作是在进化过程中发展起来的，那么“人类是包含在他的本质中的一种物质”的观点似乎就站不住脚了。
This process is termed "replacement" because solutions have dissolved the original material and replaced it with an equal volume of the new substance.
这个过程被称为“置换”，因为溶液溶解了原来的物质，并用等量的新物质取而代之。
Petrifaction may also involve a simultaneous exchange of the original substance of a dead plant or animal with mineral matter of a different composition.
石化还可能同时涉及将死亡的动植物的原有物质与不同成分的矿物质进行交换的作用。
Pouring concrete mixture into the sea immediately started the hardening process and rather than just dissolving in the mass of water, the substance was tough and long-lasting.
将混凝土混合物倒入大海后立即开始硬化过程，而且该物质非但不会在水中溶解，还保持坚硬耐久。
The phrase "substance abuse" is often used instead of "drug abuse" to make clear that substances such as alcohol and tobacco can be just as harmfully misused as heroin and cocaine.
“物质滥用”一词经常被用来代替“药物滥用”，以表明滥用酒精和烟草等物质与滥用海洛因和可卡因一样有害。
There is some substance in what he says.
他的话是有一定根据的。
There is no substance in any of these allegations.
这些指控没有一个是正确的。
The substance of his discussions doesn't really matter.
他讨论的要旨实际并不重要。
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