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在实际应用中,可以进一步理解直角坐标的含义。问一一位旅行者在早晨8时从城市出发到乡村,第一小时走了5千米,然后他
In practical applications, the meaning of Cartesian coordinates can be further understood. Ask a traveler to start from the city at 8 o’clock in the morning to the village, walk 5 kilometers in the first hour, and then he