劍橋詞典someone who makes changes to something in order to improve it 改進者；改進物 home improvers 進行家居脩繕的人 UK someone who is becoming better at a skill 進步者，提高水平者 We run swimming classes for improvers. 我們爲遊泳水平提高者開設遊泳課程。 UK a substance that is added to something to improve its quality 改良劑 Our bread does not contain preservatives , flour improvers, or other additives . 我們的麪包不含防腐劑、麪粉改良劑和其他添加劑。 soil improver 土壤改良劑 返回 improver