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prism

P 開頭單詞六級詞匯專八核心詞 SAT詞匯

柯林斯詞典

prism /?pr?z?m/ (prisms)

1. N-COUNT A prism is a block of clear glass or plastic that separates the light passing through it into different colours. 棱鏡
2. N-COUNT a polyhedron having parallel, polygonal, and congruent bases and sides that are parallelograms 棱柱體[maths]

劍橋詞典