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单词 Kuiper belt object
释义
Kuiper belt object
n. Abbr. KBO
Any of the small icy bodies orbiting the sun in the Kuiper belt, generally having a diameter less than Pluto's. Pluto is a large Kuiper belt object that was probably captured in its present solar orbit by an encounter with the planet Neptune.

[After Gerard Kuiper (1905-1973), Dutch-born American astronomer who speculated about the existence of such bodies.]
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更新时间:2026/6/3 18:48:58