他们使用无人机进行空中勘测。

They used a drone for aerial surveying.

这是世界上第一架载人无人机。

This is the world's first manned drone.

无人机在头顶飞过时发出嗡嗡声。

The drone buzzes as it flies overhead.

无人机的偏航控制非常敏感。

The drone's yaw control is very sensitive.

无人机在受限领空中飞行。

The drone was flying in restricted airspace.

无人机可以垂直地起飞和降落。

The drone can take off and land vertically.

农民使用无人机监测作物健康。

Farmers use a drone to monitor crop health.

他们从母舰上发射了无人机。

They launched the drone from the mother ship.

无人机的控制器非常灵敏。

The controllers for the drone are very sensitive.

无人机可以帮助农民监测农作物。

A drone can help farmers monitor their crops.