The second is a picture of NASA's Mercury-orbiting MESSENGER spacecraft.

第二套是一张墨丘利信使号飞船的图片。

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Messenger is the first spacecraft to go into orbit around the planet.

信使号探测器是第一进入行星轨道的航天器。

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Messenger is the first spacecraft to go into orbit around the planet.

信使号探测器是第一进入行星轨道的航天器。

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