| 单词 | extra | 
| 释义 | Word Frequency extra(ˈɛkstrə) adjective 1.  being more than what is usual or expected; additional  noun 2.  a person or thing that is additional 3.  something for which an additional charge is made  the new car had many extras 4.  an additional edition of a newspaper, esp to report a new development or crisis  5.  cinema an actor or person temporarily engaged, usually for crowd scenes  6.  cricket a run not scored from the bat, such as a wide, no-ball, bye, or leg bye 7.  US something that is better than usual in quality adverb 8.  unusually; exceptionally  an extra fast car Word origin C18: perhaps shortened from extraordinaryWord Frequency extra-prefix outside or beyond an area or scope   extrasensory  extraterritorial Word origin from Latin extrā outside, beyond, changed from extera, from exterus outward | 
	
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