sweeten: vt.1.把…弄甜，给…加糖；把…弄香，给…去臭；使减低酸性；【石油】使脱硫；〔美俚〕用威士忌酒加浓；使(声音)美妙，使(音调)好听。2.使愉快。3.使温和，使温柔；减轻(悲伤)，缓和。4.把…弄清洁，使新鲜，给…消毒。5.增加(担保品；扑克赌注)。短语和例子sweeten one's life 使生活愉快。 sweeten a room 把房间消毒[搞好房间里的清洁卫生]
The production and application of sweetening agents - dihydrochalcone drivatives were reviewed , the variable reassons of affecting sweet - degree and introduce the methods of preparation and synthesization of dihydrochalcone 摘要对二氢查尔酮类甜味剂的制备和应用作了一简要的概述，介绍了影响此类物质甜度的各个因素和二氢查尔酮衍生物的制备合成方法。
