1805R. Jameson Char. Min. 41 These lateral edges are either equiangular as in the icosahedron,..[or] unequiangular as in topaz.
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。