It was there I first heard the surreal stories of Lake Katwe, a volcanic mere that is the country's chief sourse of salt.这句话怎么翻译，尤其是后半句~~那个mere是什么用法啊。。。
还有一句
Slowly they made their way down towards the salt pans,the scores of square harvesting pools cordoned off by mud walls and sticks.也是主要是后半句。。
那个cordoned off 我不懂。。。拜托大神们给下这两句的整体翻译，谢谢啦~