radar look-directions

例句：

1. 1. The police used a radar to detect the speeding car.
   警方使用雷达探测超速车辆。
2. 2. Radar technology has greatly improved our ability to detect and track objects in the sky.
   雷达技术极大地提高了我们在空中探测和追踪物体的能力。
3. 3. The pilot used a radar to guide the plane safely through the fog.
   飞行员使用雷达指导飞机安全穿越雾区。