| 词汇 | oxygen |
| 词根词缀 | 词源： gaseous chemical element, 1790, from Fr. oxygène, coined in 1777 by Fr. chemist Antoine-Laurent Lavoisier (1743-1794), from Gk. oxys "sharp, acid" (see acrid) + Fr. -gène "something that produces" (from Gk. -genes "formation, creation;" see genus). Intended to mean "acidifying (principle)," from Fr. principe acidifiant. So called because oxygen was considered essential in the formation of acids. The element was isolated by Priestley (1774), who thought it an altered form of common air and called it dephlogisticated air. 词根记忆： n. 氧,氧气Her boyfriend fed a box of oxygen and hydrogen to the ox and fox.她男朋友给牛和狐狸喂了一盒子氧和氢. |
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