| 单词 | Davy, Sir Humphrey |
| 释义 | Davy, Sir HumphreySir Humphrey DavyDa·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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