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Pop the stack and draw a green rectangle to remove the previous translation and scaling.
从堆栈中取出坐标，绘制一个绿色矩形，以便删除之前的转换和缩放。
youdao
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At the end of the postfix expression, pop a result from the stack.
到后缀表达式末尾，从堆栈中弹出结果。
youdao
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At the end of the postfix expression, pop a result from the stack.
到后缀表达式末尾，从堆栈中弹出结果。
youdao