《汉语方言大词典》有“甲万”(闽语)“夹万”(粤语),二者是同一个词的不同词形,义为“存放珍贵物品的箱柜或保险柜”,见于19世纪......

To solve the problem of the origin of the human language,it is proposed to use the principle of“ontogeny recapitulates ......