For most of that time , however , my personal environmental credentials have been a muddier shade of green .
然而，过去逾20年的大部分时间里，我个人在环境方面的表现就不那么绿色了。
The road became mumpier and mumpier , muddier and muddier .
这条路变得愈来愈崎岖不平，愈来愈泥泞。
muddiermuddiermuddier