System of safeguarding ecological environment 1. Construction of a forest belt around the city 2. Biodiversity 3. Pollution control in rural areas是什么意思_System of safeguarding ecological environment 1. Construction of a forest belt around the city 2. Biodiversity 3. Pollution control in rural areas在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句