单词	Davy, Sir Humphrey
释义	Davy, Sir HumphreyDa‧vy, Sir Hum‧phrey /ˈdeɪvi, ˈhʌmfri/ (1778–1829) a British scientist who invented the Davy lamp, an oil lamp that could be used in coal mines without causing explosions. He also discovered several elements (=basic chemical substances), including calcium, sodium, and potassium.
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