后备的

• The hong kong observatory installed a doppler weather radar at tai mo shan ( tms ) , the highest mountain in hong kong . the tms weather radar , backed up by another doppler weather radar at tate s cairn ( tc ) , forms a reliable source of radar data for short - range weather forecasting
  天文台在全港最高的大帽山上安装了一座多普勒天气雷达，而大老山上亦装置了另一座作为后备的多普勒天气雷达。