VOA慢速英语2015.03.05 choice, people, careful, scientific, another

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Now, let us get back to two more scientific meanings of matter. Scientists say that dark matter makes up most of our universe. And when people talk about gray matter, they are talking about the brain. There is another way to use the word matter. But be careful with your choice of words. ____________________________ 现在我们来看看关于matter在科学领域的两个词义.科学家说黑暗物质是构成宇宙的最主要的物质.人们谈论灰白质时,则是指大脑. 单词matter还有另一种用法,所以要小心词汇的选择. ___________________________

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