1879tr. Haeckel's Evol. Man II. xvii. 97 Of the earlier and lower section, that of the Skull-less, the Amphioxus is alone extant.
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。