fast lane
noun [ S ] uk/ˈfɑːst ˌleɪn/ us/ˈfæst ˌleɪn/
（主路上的）快车道
the part of a main road where vehicles travel at the fastest speed
Idiom
life in the fast laneidiom C2 充满刺激的生活
a way of living that is full of excitement, activity, and often danger
Parties and women - he was living life in the fast lane. 他参加聚会，有无数美女陪伴——过着十分刺激的生活。