teeth root的音标：teeth root的英式发音音标为：[ti:θ ru:t]teeth root的美式发音音标为：[tiθ rut]...

牙根...

Hypoplasia of teeth root ( HTR ) disease is a disorder with physiological development of tooth root.牙根 发育 不良 疾病是牙齿根部生理性发育出现障碍的疾病....