| 释义 | 
             
                aff r.
                
            raffn. 大量;废料(等于riffraff)affirmvt. 断言;肯定 vi. 断言;确认affordvt. 给予,提供;买得起
 读、写、算dú  _ xiě  _ suàn 
 the three R's每分钟转数měi fèn zhōng zhuǎn shù 
 revolutions per minute (r/m)阴极射线管yīn jí shè xiàn guǎn 
 cathode-ray tube (CRT); cathode-ray lamp; C-R tube
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