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图表开头描述： 1. According to the table, the 文章主题 increased from 数字 in 年份 to 数字 in 年份. Although this was a small increase, the way in which 修饰 changed greatly. 2. Since 年代, China has witnessed a great change in 主题. As the graph shows, the percentage of 主题词 1 decreased considerably, dropping from 数字 in 年代 to 数字 in 年代, while the corresponding figures for 主 题词 2 increased dramatically, rising from 数字 to 数字 over the same period. 3. As can be seen from the above graph, money value of annual global electronic commerce transactions is increasing gradually in the past nine years. In 2002, the money value of global electronic commerce transactions is almost $ 4 billion, while the number reaches $ 360 billion in 2011, 90 times that of 2002. 4. It can be seen from the pie chart that accounts for the largest proportion. 主题词 makes up 百分比 of 百分比 represents 主题词 百分比 is defined as 主题词 5. Isolated as the figures seem to exist, as a matter of fact, they are connected with one another closely. Psychological problem is most prevalent among the 14-16 and 17 to 19 age groups, with 40% and 60% up of them claimed to have been troubled by it respectively. | 
