1791Cowper Iliad v. 590 The powers of Troy..the Grecians dense Expected, unretreating, void of fear.
1858J. Robertson Poems 78 As light is mixed in the unretreating air.
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。