unmanned space probe meaning in English
不载人宇宙火箭
Examples
- Since 1965 , nasa has launched a number of unmanned space probes to fly to or even land on mars . though these probes revealed that there were no artificial canals on mars , they found signs of recent liquid water on the subsurface of mars
美国太空总署自1965年曾多次发射无人探测船飞往火星，甚至登陆火星，虽然证实了火星上并无人造的运河，却发现即使在近代，火星地表下极可能仍有液态水的存在。