superior planets
Failure of an animal to take maternal care of its young.
plural of superior planet
(art) A monochrome print.
(transitive) To hang or attach to, as by a string, so that the thing is suspended / (transitive) To add, as an accessory to the principal thing; to annex
天文学者たちは軌道力学を理解するために、地球より外側にある惑星の満ち欠けや逆行運動をよく研究する。
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