智齿英文

WISDOM：又叫立事牙复合：wisdom tooth any of the four molars at the back of the mouth that appear when one is about 20 years old 智牙.

wisdom tooth: n. 智齿例句与用法: 1. Extract a wisdom tooth. 拔出一颗智齿 英英解释: 名词wisdom tooth:1. any of the last 4 teeth on each side of the upper and lower jaw; the last of the permanent teeth to erupt (between ages 16 and 21)

答案：wisom toothone of thu four rearmostmolars on each side of the upperand lower jaw in humans,which generally appears between the age of 18 to 30,or in slome people never;口腔中最后面的臼齿，一般在十八至三十才长出来，有些人的智齿终生长不出来；

就是换完牙后 再在牙齿最里端长出的4颗牙齿。

智齿，下排牙齿最里边的那4颗