出处：按学科分类—语言、文字 中国对外翻译出版公司《汉英成语词典》第144页（273字）
指忠于职守而献出自己的生命，例而对歹徒的胁迫，她奋力反抗，坚持不交出保险柜的钥匙，终于以身殉职。
Faced with the threat of the robber，she refused to surrender the key of the safe．
There was a terrific tussle ending with her being killed at her post