| 单词 | extravehicular activity |
| 释义 | ex•tra•ve•hic•u•lar activity (ĕk′strə-vē-hĭkyə-lər)n. Abbr. EVA Activity or maneuvers performed by an astronaut outside a spacecraft in space. extravehicular activityastronaut Randy Bresnik on a mission at the International Space Station in November 2009 |
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