It is not true for helicopter or a fixed wing aircraft.

直升机或固定翼飞机是不能做到的。

Since 2001, the CIA and Air Force have deployed the multimillion-dollar fixed wing MQ-1 Predator and MQ-9 Reaper drones, which are the size of small fighter jets and can deliver Hellfire missiles and 500-lb. bombs.

自2001年以来，中央情报局和空军部门已经部署了价值数百万美元的固定翼“MQ-1捕食者”和“MQ-9收割者”等，小型战斗机大小，可以发射地狱火导弹和500磅炸弹的无人机。

The agronomist has just flown over the field with a hybrid unmanned aerial vehicle (UAV) that takes off and lands using propellers yet maintains distance and speed for scanning vast hectares of land through the use of its fixed wings.

这位农艺师刚刚驾驶混合动力无人机 (UAV) 飞过田野， 该无人机使用螺旋桨起飞和降落， 同时通过固定机翼保持距离和速度扫描大片土地。