题目解析:
Offset在本文的意思是counteract。提示:...the region would store about 400 million tons of carbon over 10 years—the equivalent of taking almost 4 million cars off the road. Thus, preserving the potholes could be a way to offset greenhouse gas emissions that are warming the planet.前缀counter-相当于反(against);保护坑洞将对二氧化碳等温室气体起作用。