单词：jean_bernard_leon_foucault 

名词

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  [1.n.jean_bernard_leon_foucault] (同义词:[Foucault]  [Jean_Bernard_Leon_Foucault]  )
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  注释列句：French physicist who determined the speed of light and showed that it travels slower in water than in air; invented the Foucault pendulum and the gyroscope (1819-1868)
• 实 例 -> [physicist( n. 物理学者, 唯物论者 )]