approach-marker-beacon transmitter

例句：

1. 1.The approach marker beacon transmitter is used to guide ships in the harbor.
   接近标记灯塔发射器用于引导港口中的船只。
2. 2.The approach marker beacon transmitter helps maintain order on the busy street.
   接近标记灯塔发射器帮助维护繁忙街道的秩序。
3. 3. The approach marker beacon transmitter was installed at the entrance of the new building.
   接近标记灯塔发射器在新建筑入口处安装。