unmanned

adj.

被阉割的；（机器，尤指航天器）无人驾驶的；怯懦的；（鹰等）未受狩猎训练的

v.

使失去男子气质( unman的过去式和过去分词 )；阉割；使怯懦；使气馁

unmanned spacecraft无人驾驶飞机；无人宇宙飞船

1. We sent an unmanned rocket into earth orbit.
   我们把一个无人驾驶的火箭送入了地球的轨道里。
2. Unmanned probes can be much smaller and lighter than manned spaceships.
   无人驾驶探测器可以比载人航天器小得多，轻得多。
3. I am quite unmanned by the news.
   那消息使我茫然若失。
4. Unmanned by grief he broke down and wept.
   他悲伤得不像个男子汉不禁哭了起来。

Unmanned Aircraft Systems Roadmap 2005-2030
Unmanned aerial systems for photogrammetry and remote sensing: A review
A vision system for landing an unmanned aerial vehicle
Coordinated target assignment and intercept for unmanned airvehicles
Coordinated target assignment and intercept for unmanned airvehicles
Coordinated target assignment and intercept for unmanned air vehicles
Decentralized overlapping control of a formation of unmanned aerial vehicles
Decentralized overlapping control of a formation of unmanned aerial vehicles ☆
Multivariable sliding mode control for autonomous diving and steering of unmanned underwater vehicles
Thermal and Narrowband Multispectral Remote Sensing for Vegetation Monitoring From an Unmanned Aerial Vehicle