idiom
reduce carbon footprint
减少释放到大气中的二氧化碳和其他温室气体的数量
Meaning
to decrease the amount of carbon dioxide and other greenhouse gases released into the atmosphere
Example
Many companies are working to **reduce their carbon footprint** by using renewable energy.
许多公司正在通过使用可再生能源来**减少他们的碳足迹**