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Acronym of Organization of Petroleum Exporting Countries.
(category theory) An object V together with an arrow going from each object of a diagram to V such that for any arrow A in the diagram, the pair of arrows to V which form a triangle with A also com...
An informal notice of the date of an important upcoming event, usually a wedding, sent before a formal invitation.
Used to make a polite request. / Used as an affirmative to an offer. / An expression of annoyance or impatience.
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DiQt（ディクト）
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