short period comets
(uncountable) A motorcycle sport run on predominantly off-road courses, with many obstacles and challenges. / (countable) A particular race or event in the sport of enduro.
plural of short period comet
(organic chemistry) Any of a group of saponins obtained from the Moses sole (Pardachirus marmoratus) and acting as a shark repellent.
(New Zealand) Melicope ternata, a coastal shrub or small tree in the Rutaceae family, native to New Zealand.
多くのアマチュア天文家は、予測可能な回帰や突然の噴出を観測するために短周期彗星を観察します。
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