Part of such planetesimals entered the asteroid region, drew out most of the matter there, and increased the random velocity of the asteroids that remained, so they could not combine to form a planet.

一部分大星子进入小行星区，拉走了大部分物质，增加了留下的小行星的随机速度，使该区内形成不了大的行星。

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Part of such planetesimals entered the asteroid region, drew out most of the matter there, and increased the random velocity of the asteroids that remained, so they could not combine to form a planet.

一部分大星子进入小行星区，拉走了大部分物质，增加了留下的小行星的随机速度，使该区内形成不了大的行星。

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