| 词汇 | automatic |
| 词根词缀 | 词源： 1812, "self-acting, moving or acting on its own," from Gk. automatos, used of the gates of Olympus and the tripods of Hephaestus (also "without apparent cause, by accident"), from autos "self" (see auto-) + matos "thinking, animated" (see automaton). Of involuntary animal or human actions, from 1748, first used by Eng. physician and philosopher David Hartley (1705-1757). As an adj., in ref. to a type of firearm, from 1877; specifically of machinery that imitates human-directed action from 1940. As a noun meaning "automatic weapon" it is recorded from 1902; meaning "motorized vehicle with automatic transmission" is from 1949. 词根记忆： a. 自动(装置)的;无意识的;n.自动机械The heating system has an automatic temperature control.取暖系统是自动调温的. |
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