每半小时

• Coaches from the terminus go to the airport every half an hour
  航空集散站每半小时有一辆客车开往机场。
• 8 for each half hour thereafter
  及后每半小时8
• Each half hour thereafter
  以后每半小时
• Charge for each half - hour in excess of 4 hours function with the services listed in
  租用超过4小时，超时每半小时的收费，包括
• 2 basic rental charge for each half hour or part thereof in excess of 3 hours
  2租用超过3小时，超时每半小时或不足半小时的收费。
• Take ten drops
  每半小时
• Charge for each additional half - hour in excess of 4 hours function with the services listed in
  租用超过4小时，超时每半小时的收费，包括
• Each half hour
  每半小时
• Radar images at half - hourly intervals for the past 3 hours are normally displayed
  一般情况下，会播放过去3小时、每半小时一张的雷达图像。
• Charge for each half - hour in excess of 2 hours and a half hours screening with the services listed in
  租用超过2小时30分，超时每半小时的收费，包括