ecological footprint
noun [ C ] uk/iː.kəˌlɒdʒ.ɪ.kəl ˈfʊt.prɪnt/ us/iː.kəˌlɑː.dʒɪ.kəl ˈfʊt.prɪnt/ us/e.kəˌlɑː.dʒɪ.kəl ˈfʊt.prɪnt/ (also eco-footprint)
生态足迹（某人或某物占用的地球资源量）
the amount of the earth's energy that someone or something uses
I'm trying to reduce my ecological footprint by cycling more and driving less. 我试图通过多骑车、少开车减少我的生态足迹。