| 释义 | 
             
                chakar r.
                
            charan. 〈口〉大游览车charvi. 烧焦;打杂 n. 炭;家庭杂务chagrinn. 懊恼;气愤;委屈 vt. 使…懊恼
 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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