Crux
(mathematics) Having or employing multiple derivatives
plural of postperovskite
(astronomy) A distinctive winter constellation of the southern sky, shaped like a cross. It appears in the flags of several countries in Oceania.
(history) A political conglomeration of lands in Central Europe from at least 962 C.E. until 1806.
夜遅く、航海士は南十字星を使って島々への船の進路を安定させた。
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