This article analyzes the existing issues of Bei Hai wetland, proposes the engineering options for Bei Hai wetland protection, and analyzes the benefits of these engineering options.是什么意思_This article analyzes the existing issues of Bei Hai wetland, proposes the engineering options for Bei Hai wetland protection, and analyzes the benefits of these engineering options.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句