The average shooting star is a small fragment of matter usually smaller than a pea and often no larger than a grain of sand.
普通流星通常只是比豌豆还小，而且往往并不比一粒沙子更大的物质碎片。
The average shooting star is a small fragment of matter usually smaller than a pea and often no larger than a grain of sand.
普通流星通常只是比豌豆还小，而且往往并不比一粒沙子更大的物质碎片。
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