瀑布是由熔岩和火山物质构成的。

The Cascades are made up of lavas and volcanic materials.

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岛屿是由堆积的泥土和杂草以及湖底的物质构成的。

Islands are made from packed earth and weeds and material from the bottom of the lake.

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一切物体都是由某种物质构成的。

Everything is made of something.

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We're familiar with polymers, plastics in our daily life; the chairs that you're sitting on are made of a kind of a plastic polymer that is basically an organic chemical that is cross-linked together.

我们应该很熟悉聚合物,比如日常生活中的塑料就是,你们坐的椅子,就是由一种塑料聚合物构成,它由基本的有机化学物质交联在一起

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Something that's not a material object.

一个不是由物质实体构成的东西

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Well the fact is it could be hundreds of foods in the American food supply, and what's noteworthy about this particular list of ingredients, is that it's fifty-six entries long; fifty-six things in this particular food and we defined it as food.

实际上,答案可以是,几百种美国食品,值得注意的是,这张配料单,居然包含了五十六种配料,这种由五十六种物质构成的东西,而我们还将它定义为食品

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