单词	equality (sets)
释义	Equality (sets) Sets that have precisely the same elements. They don't have to be in the same order. Example: {1,2,3,4} and {3,4,2,1} are equal. Note: it must work both ways, each element of the 1st set must be in the 2nd set and each element of the 2nd set must be in the 1st set.
随便看	stationary point statistics stem-and-leaf plot stemplot steradian stochastic straight angle straight line subitising subscript subset substitution subtend subtended angle subtract subtraction subtrahend successive sum summary statistics summer superscript supplementary angles surd surface

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