| 单词 | click wheel | 
| 释义 | > as lemmasclick wheel   click wheel  n. 		 (a) a ratchet wheel (now chiefly historical);		 (b) a finger-operated control for an electronic device (esp. an iPod) which incorporates a touch-sensitive ring and clickable buttons. ΚΠ 1772Click wheel [see  Compounds 1].							 1821    Repertory Arts, Manuf., & Agric. Sept. 199  				I use a double set of ratchet or click-wheels. 1998    InternetWeek 31 Aug. 31/2  				Click wheels started appearing on mice and cell phones a couple of years ago, but no one has done such a masterful job organizing the nested menus behind them. 2002    F. Tallis Hidden Minds i. 2  				These clever devices [sc. clocks], with their springs and bobs, click wheels and ratchets, provided the age with a guiding metaphor. 2007    Stuff July 124/3 		(caption)	  				The click-wheel is great for careering through menus, though it will take time to gauge the trackball's sensitivity. < as lemmas | 
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