fast lane
noun
usu. in sing.
1- a lane of a motorway or dual carriageway for use by traffic that is overtaking or moving more quickly than the rest（高速公路或复式车行道的）快车道; 超车道。
1.1
- a hectic or highly pressured lifestyle（快车道式的）繁忙（或压力巨大）的生活方式：
his face showed the strain of a life lived in the fast lane.
他的脸上显露出了那种快节奏生活的高度紧张神色。