| 单词 | scan |
| 释义 | scan —scannable, adj. /skan/, v. , scanned, scanning, n. v.t. 1. to glance at or over or read hastily: to scan a page. 2. to examine the particulars or points of minutely; scrutinize. 3. to peer out at or observe repeatedly or sweepingly, as a large expanse; survey. 4. to analyze (verse) as to its prosodic or metrical structure; read or recite (verse) so as to indicate or test the metrical form. 5. to read (data) for use by a computer or computerized device, esp. using an optical scanner. 6. Television. to traverse (a surface) with a beam of light or electrons in order to reproduce or transmit a picture. 7. Radar. to traverse (a region) with a beam from a radar transmitter. 8. Med. , Biol. to examine (a body, organ, tissue, or other biologically active material) with a scanner. v.i. 9. to examine the meter of verse. 10. (of verse) to conform to the rules of meter. 11. Television. to scan a surface or the like. n. 12. an act or instance of scanning; close examination. 13. a visual examination by means of a television camera, as for the purpose of making visible or relaying pictures from a remote place: a satellite scan of the dark side of the moon; video scans of property listings available to customers. 14. a particular image or frame in such video observation or a photograph made from it. 15. Med. , Biol. a. examination of the body or an organ or part, or a biologically active material, by means of a technique such as computed axial tomography, nuclear magnetic resonance, ultrasonography, or scintigraphy. b. the image or display so obtained. [1350-1400; ME scannen, var. of *scanden < LL scandere to scan verse, L: to climb (see ASCEND)] Syn. 1. study, investigate, inspect, search. 2. skim. |
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