单词 | oort's comet cloud |
释义 | > as lemmasOort'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.< as lemmas |
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