When you add dimensions to an array, the total storage needed by the array increases considerably, so use multidimensional arrays with care.
增加一个数组的维数时，该数组所需的总存储空间会急剧增大，因此应慎用多维数组。
When you add dimensions to an array, the total storage needed by the array increases considerably, so use multidimensional arrays with care.
增加一个数组的维数时，该数组所需的总存储空间会急剧增大，因此应慎用多维数组。
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