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55页（211字）
指单人行动，没有别人帮助，例他匹马单枪深入匪窟，解救人质，勇气十分令人感佩。
Single-handed he went into the banditridden area to negotiate the release of the hostages．His courage was truly admirable．