1794Sullivan View Nat. I. 272 Many naturalists, as well as he, conceived this substance to be neither animal nor vegetable, but to be merely an aerial or gazous scum.
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。