2.rid...of 摆脱;除去 3.be satisfied with 对……感到满意 4.would rather 宁愿;宁可 5.build up 逐渐增强;建立;开发 6.lead to 导致;造成 7.focus on 集中(注意力、精力等)于 8.keep...free from/of 使……免受(影响、伤害等);使……不含(有害物) 9.make a differen...