Warning: file_put_contents(/www/wwwroot/ppbbbu/oiqp.com/cache/167618891967a7b74cebf8bde204f5af.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbbu/oiqp.com/index.php on line 55 permanent tooth是什么意思，permanent tooth的翻译，permanent tooth音标、读音、用法和例句_奇葩剧汉英词典
The exfoliation of the deciduous teeth is mainly brought about by resorption of their roots and enhances by growth and eruption of the succeeding permanent teeth. 总而官之，乳牙之所以会脱落主要在于它们的根部会发生吸收，而其下正在萌出的永久齿则增进了它在根部进行吸收的工作。