国際キログラム原器

こくさいキログラムげんき

noun

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International Prototype of the Kilogram, IPK

国	country
際	occasion, side, edge, verge, dangerous, adventurous, indecent, time, when
原	meadow, original, primitive, field, plain, prairie, tundra, wilderness
器	utensil, vessel, receptacle, implement, instrument, ability, container, tool, set