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237页（230字）
形容地势险要雄壮，例南京背负钟山，面临长江，形势险要，历代称之为龙盘虎踞之地。
The city of Nanjing faces the Yang Zi River and backs on to Mount Zhong Shan．It has always been regarded as a strategically important place．