二十一世纪中国西部环境与可持续发展的翻译：21st century Western environment and sustainable development in China 什么意思？中文翻译英文，英文翻译中文，怎么说？

青云英语翻译

Twenty-first century environment and sustainable development in western China

21st century Western environment and sustainable development in China

West 21st century China environment and sustainable development

China's western region 21 environment and sustainable development

21st century Western environment and sustainable development in China