1878P. Bayne Purit. Rev. x. 409 Of all the unkillable lies..this is perhaps the most toughly immortal.
1885Daily News 14 July 2 The chickens are so hardy as to be unkillable by the ordinary diseases.
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。