What does she call measuring a product's carbon footprint?

她把测量某个产品的碳足迹叫做什么？

So, Dr Zaina Gadema-Cooke describes the measurement of a product's carbon footprint as 'foot printing'.

所以 Zaina Gadema-Cooke 博士把测量某个产品的碳足迹描述为“足迹法”。