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140页(227字)
指遇到国家有危难时,不惜付出自己的生命,例在国家危急存亡之秋,总有见危授命之士,挺身而出,不惜为国牺牲。
When the country is in a life and death struggle,there are always people who come forth to give their lives for the country.