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来源:雅诚德英语网
A combination of higher summer temperatures and lower winter snowfall is causing the retreat.
夏季过高的温度和冬季降雪量减少的综合因素导致了雪线的后退。
A combination of higher summer temperatures and lower winter snowfall is causing the retreat.
夏季过高的温度和冬季降雪量减少的综合因素导致了雪线的后退。