16. this is a graph which illustrates...
這個圖表向我們展示了......
17. this table shows the changing proportion of a & b from...to...
該表格描述了......年到......年間a與b的比例關系。
18. the graph,presented in a pie chart, shows the general trend in...
該圖以圓形圖形式描述了......總的趨勢。
19. this is a column chart showing...
這是個柱型圖,描述了......
20. as can be seen from the graph,the two curves show the flutuation of...
如圖所示,兩條曲線描述了......的波動情況。