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单词 cubarithm slate
释义 cu·ba·rithm slate
\ˈkyübəˌrithəm-, thəm-\ noun
Etymology: cube (I) + arithmetic
: a braille slate consisting of a box divided into square compartments into which cubes bearing on each face a number in braille dots may be placed in the usual pattern for performing arithmetical problems
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更新时间:2025/1/27 5:47:09