.9托福考试高频词汇Aa pivotal figure (关键)人物 pivot 轴心premium n.保险金 a.高级的，高价的a premium student 优秀学生a range of 一系列的东西（有顺序）a range from sth. to sth. 从.到.范围，排列不等abandon 抛弃，放纵 abandonment n.abbreviate abbreviate v. 缩短，缩写 abbreviation n.abrasion abrasion n.磨损abstract abstract (ab-去掉,stract 拉)a.抽象的 n.概要absurd absurd a.荒谬的abundance abundance (und-波浪) n.丰富，多麦浪翻滚undulate/fluctuate 波动accelerate accelerate (celer-速度)v.加速，不断增长 celerity速度decelerate v.减速have access to ha
