An even smaller type of interplanetary debris is the meteoroid.

有一种更小的星际碎片，是流星体。

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It was the first time an interplanetary probe was launched from a space shuttle.

这是人类第一次尝试从航天飞机上发射行星探测器。

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It was the first time an interplanetary probe was launched from a space shuttle.

这是人类第一次尝试从航天飞机上发射行星探测器。

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