the chart gives us an overall picture of the 图表主题. the first thing we
notice is that 图表最大特点 . this means that as (进一步说明).
we can see from the statistics given that 图表细节一 . after 动词-ing 细节一中的第一个变化， the动词-ed+幅度+时间(紧跟着的变化) . the figures also tell us that图表细节二 . in the column, we can see that accounts for (进一步描述).
judging from these figures, we can draw the conclusion that (结论). the reason for this, as far as i am concerned is that (给出原因). / it is high time that we (发出倡议).