adj.無(wú)人操縱的；難以自持的；(鷹等）未經(jīng)過(guò)訓(xùn)練的

We sent an unmanned rocket into earth orbit. 我們把一個(gè)無(wú)人駕駛的火箭送入了地球的軌道里。

Unmanned probes can be much smaller and lighter than manned spaceships. 無(wú)人駕駛探測(cè)器可以比載人航天器小得多，輕得多。

I am quite unmanned by the news. 那消息使我茫然若失。