The leftright and topbottom are STL (Standard Template Library) -like half-open ranges for column (s) and row (s) respectably.
leftright和topbottom是分别用于列和行的类STL(标准模板库)的半开区间(half - open range)。
The leftright and topbottom are STL (Standard Template Library) -like half-open ranges for column (s) and row (s) respectably.
leftright和topbottom是分别用于列和行的类STL(标准模板库)的半开区间(half - open range)。
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