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substance

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Petrol is a volatile substance.(汽油是挥发性物质。)
Any substance is made of atom. Whether it is solid, liquid or gas.(任何物质都是由原子构成的。无论是固体、液体还是气体。)
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。)
The response generally lacks substance beyond expression of very basic ideas.(这种回应除了表达非常基本的想法，一般都缺乏实质内容。)
Caffeine, a substance found in coffee and some soft drinks, is also a drug.(咖啡因，一种存在于咖啡和一些软饮料中的物质，也是一种毒品。)
The substance polymerizes to form a hard plastic.(这种物质聚合形成坚硬的塑料。)
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。)
Clay is a plastic substance.(黏土是可塑物质。)
No substance that has the power to do this is completely safe.(任何有能力做到这一点的物质都不是完全安全的。)
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”。)

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