增加：在缺词处加一个漏字符号（∧）,并在其下面写出该加的词。

删除：把多余的词用斜线（＼）划掉。

修改：在错的词下划一横线,并在该词下面写出修改后的词。

注意：1)每处错误及其修改均限一词;

2)只允许修改10处,多者（从第11处起）不计分。

    Guilin is in Guangxi Zhuang Autonomous Region, China, famous of its mountains and waters. I went here last summer and stayed for five day. During that time not only I enjoy the fascinating scenery like the unique mountains and clean rivers, but also I try the traditional weaving of Zhuang people. That impressed me most was the amazing folk-song-singing competition on the Li River, which attracted thousands of visitors or locals. Guilin enjoys a worldwide fame for it beautiful scenery, so it's well worth visiting. I am strongly recommend you to visit it. I believe you will have a wonderfully time.

翻译下列句子

环境保护

健康的湿地生态系统，是国家生态安全体系的重要组成部分，也是实现经济与社会可持续发展的重要基础。目前，我国已建立以湿地保护区为主体，以湿地公园等为补充的湿地生态系统。下图示意我国不同干湿地区湿地保护区和湿地公园的相对面积。说明我国湿地保护最有效的区域，并分析湿地公园存在的问题。