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03:21 Trans_Energy_M9L2_Classification_DriveTrain_Struct… Trans_Energy_M9L2_Classification_DriveTrain_Structure_1	Trans_Energy_M9L2_Classification_DriveTrain_Structure_1 automotive fuel consumption road transport automobiles hybrid cars & electric cars vehicles hybrid and electric vehicles traffic and transport environmentally friendly vehicles fuel efficient cars air protection automobile emissions control electric motor motor technology internal combustion engine traffic emissions caption complete From Rui Hu 7 plays 0