n.下段射程(下靶场；目标线)
adj.下靶场的
Landed a thousand miles downrange; the downrange target area. 在顺发射方向一千英里处着陆; 发射方向的目标区域
The signal was picked up by a downrange radar station. 该信号被试验飞行方向之内的雷达站收到了。
