循环经济

chuán tǒng jīng jì mó shì xiàng xún huán jīng jì mó shì de zhuǎn huàn

传统经济模式向循环经济模式的转换

transformation of traditional economy mode to circular economy mode

dà xún huán jīng jì xì tǒng

大循环经济系统

large circular economy system