图表用来在两组或多组数据之间进行比较，或者表示某一特定时间内的上升或下降的趋势。
A graph can be used to show a comparison between two or more groups of figures, or to show an increasing or decreasing tendency during a particular period of time.
图表用来在两组或多组数据之间进行比较，或者表示某一特定时间内的上升或下降的趋势。
A graph can be used to show a comparison between two or more groups of figures, or to show an increasing or decreasing tendency during a particular period of time.
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