headway

headway
noun
  1. [mass noun]forward movement or progress
    前进;进展
    they appear to be making headway in bringing the rebels under control.
    他们似乎在控制叛乱上获得了进展。
    the ship was making very little headway against heavy seas.
    航船在汹涌的波涛中难以前进。
  2. the average interval between trains or buses on a regular service
    (火车或公共汽车的)发车间隔
    a six-minute headway.
    六分钟的发车间隔。
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