释义 |
near-earth object noun[ C ] uk /ˌnɪərˌɜːθ ˈɒb.dʒɪkt/ us /ˌnɪrˌɝːθ ˈɑːb.dʒɪkt/(abbreviationNEO) an object in space, for example an asteroid, comet, or meteoroid that sometimes passes close to the earth: 近地天体 The task of finding and tracking large near-earth objects more than one kilometre across has been assigned to the Spaceguard Survey.发现和跟踪直径超过一千米的大型近地天体的任务已交给“空间卫士勘测计划”来做。 SMART Vocabulary: related words and phrases Astronomy albedo Andromeda Aquarius Aries asteroid galactic galaxy Gemini geostationary geosynchronous observatory orbit orbital Orion penumbra substellar sunspot supergiant supermassive supermoon |