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单词 oort's comet cloud
释义

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Oort's comet cloud
Oort cloud n. (also Oort's cloud) a cloud of icy bodies postulated to surround the solar system well beyond the orbit of Pluto and to act as a reservoir of comets (now usually identified with the Kuiper belt). Formerly also Oort's comet cloud.extracted from Oortn.
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更新时间:2025/1/12 14:21:55