idling

例句:

• Her Daimler limo waits with its engine idling.
  她的戴姆勒豪华轿车原地待命，发动机在空转。
  
• He says his Volts are not idling on his lot.
  来自VOA
• He is always idling around street corners.
  他老是在街头角落闲逛.
  
• Residents were mowing their lawns, washing their cars and otherwise idling away a pleasant, sunny day.
  居民们有的在刈草，有的在洗车，还有的在悠闲地享受阳光灿烂的怡人时光。
  
• You round a bend and see a police car idling on the shoulder.
  来自VOA
• Now the saw was idling again, and Martine was standing in the doorway.
  来自NEWYORKER