1852Brande Dict. Sci., etc. (ed. 2) Suppl. s.v., In man and mammalia the vitellicle is called the ‘umbilical vesicle’.
英语词典包含277258条英英释义在线翻译词条,基本涵盖了全部常用单词的英英翻译及用法,是英语学习的有利工具。