乌江是一条军事河流，历来被称作天险。

Wujiang River is a military river that has always been known as a natural barrier.

《跨越天险：战胜全球化首次危机》，戈登·布朗著，自由出版社出版，20欧元。

Beyond the Crash: Overcoming the First Crisis of Globalization. By Gordon Brown.