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Can primary school mathematics be expressed by east deviation or west deviation?
(1) Since the northeast direction is opposite to the southwest direction, when point B is in the northeast direction of point A, point A is in the southwest direction of point B. (2) According to the number pair representation, it can be obtained that a (4 4,3) indicates that the object is in the fourth column and the third row, and b (1, 3). (2)3 1,3,OK。