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…
| 单词 | θ1168 |
| 释义 | the world > the universe > constellation > comet or meteor > comet > [noun] > group of (1) Oort cloud1968 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… |
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