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大家齐齐学英语咯"The terms top left and bottom right do not imply any ordering of coordinates."--词"左", "右", "上", "下"并不代表坐标中的顺序, 即是说"left"不一定是最左的点的x值, "right"不一定是最右的点的x值... "The rectangle consists of four straight lines and the area in between"矩形包括边界以及内部. Followed by:
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