| 单词 | phobos mission |
| 释义 | Phobos missionPhobos missionEither of two Soviet missions to land a probe on Mars' satellite Phobos. Phobos 1 was launched 1988, but contact was lost while it was still in transit. Phobos 2 was launched the following year, but signals from it ceased transmission about a week before the scheduled landing. |
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