Words and Expressions 1、succession n.连续（连续发生），系列sequence,.series The act or process of following in order or sequence. 连续，接续在时间上或次序上一个接一个的行为或过程 the succession of the seasons in succession 2、purification n.净化，提纯 air purification空气净化 3、inconsequential a.Lacking importance无关紧要 的，微不足道的 4、more often than not常常，通常，多半（是）Words and Expressions 1、succession n.连续(连续发生), 系列 sequence, series The act or process of following in order or sequence. 连续，接续在时间上或次序上一个接一个的行为或过程 the succession of the seasons in succession 2、purification n.净化, 提纯 air purification 空气净化 3、inconsequential a. Lacking importance 无关紧要 的 , 微不足道的 4、more often than not 常常, 通常, 多半 (是)