食品生产有许多道工序，这会带来温室气体和其他污染物。
There are many procedures involved in the manufacture of food that result in greenhouse gases and other pollutants.
曼彻斯特大学的一项研究计算了二氧化碳（造成气候变化的主要温室气体）在微波炉生产的每个阶段的排放量，从产品制造到废物处理。
A study by the University of Manchester calculated the emissions of CO2—the main greenhouse gas responsible for climate change—at every stage of microwaves, from manufacture to waste disposal.
我们应该着眼于全系列的过程中产生的温室气体的粮食生产。
We should be looking at the full spectrum of greenhouse gases produced during food production.
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