例句與造句

1. "' Preliminary Routing Indicators "'( PRIs ) are installed on the approach to certain junctions.
2. A track-number type preliminary route indicator ( 2愶崍NJT _ jju?} h?: yop, " shinro yokokuki bansen hyM
   jitM
   " ) advises the route by number.
3. If a train is allowed on track # 3, the track number display shows 3; the number's color matches the main signal to which the preliminary route indicator is attached.
4. It's difficult to find preliminary route indicator in a sentence. 用preliminary route indicator造句挺難的