The system uses a GPRS network to locate buses and establish the headway.这一系统运用GPRS网络对公共汽车进行定位并设定发车间隔。

There was concern in the city that police were making little headway in the investigation.市民担心警方的调查没有取得什么进展。

I'm not making much headway with 'War and Peace'.《战争与和平》这本书我还没读多少。

The Allies were making good headway up in the north-west.西北方的盟军向前推进了不少。

The vessel made no headway.船无法前进。