行时间

• line time

例句

1. 新的公共汽车交通服务使运行时间减少了一半。
   The new bus service cuts the travelling time by half.
2. 这架坠机的飞行员，其空中飞行时间已达数百小时。
   The pilot of the crashed aircraft had logged up several hundred hours' flying time on jets.