短语词组用作动词 (v.)～+名词heighten sb 's fears 使某人更加恐惧heighten the effect 提高效率heighten one 's speed 加快速度heighten the value of a painting 提高一幅画的价值～+副词heighten further 进一步加强heighten quickly 迅速增高heighten slowly 慢慢增高短语 返回 heightens