nonperiodic comet
(astronomy) A comet that does not return to near the sun in a regular orbit.
(military, transitive) To prepare a building for defense by preparing slits or holes through which to fire on attackers / (transitive) To exploit (a law, etc.) by means of loopholes.
Archaic form of somersault.
plural of doober
昨夜、アマチュア天文家たちは、遠方の星々を背景に移動するかすかな、定期的に太陽近辺に戻ってこない彗星を発見したと報告した。
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