| 释义 | 
             
                p21 v Ki ras
                
            小心谨慎xiǎo xīn jǐn shèn 
 mind one's p's and q's地岬dì jiǎ 
 ras暴跃bào yuè 
 collapse v.动词dòng cí 
 v., verb排成行pái chéng háng 
 line-up v.磷lín 
 phosphorus; phosphor; water in rocks; P胜利记号shèng lì jì hào 
 V sign族半导体zú bàn dǎo tǐ 
 group iii v semiconductor
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