重点讲解：
1. on average 平均起来；按平均值；
例句：They work 10 hours a day on average.
他们平均每天工作10个小时(Tc=u^iB*#0vd%1hg。
2. be based on 以…为基础；
例句：The progress of the society is based on harmony.
社会的进步是以和谐为基础的gv88H7(WD-P。
3. suffer from （因疾病或处于其他不利境地而）受苦，受难，受折磨；
例句：Many immigrants suffer from a sense of alienation.
许多移民因感到不容于社会而苦恼~QM)Bsr.#YyOLVXYgC&o。
4. due to 由于；因为；
例句：The service did not start due to a logon failure.
由于登录失败而无法启动服务oPl=jDtGup.7|O。
5. compared to 与…相比；和…比起来；
例句：His progress at school had been unspectacular compared to his brother.
和弟弟相比，他在学校里的进步很不起眼P%bR[x.=-6+。
6. lead to 招致；致使；导致；
例句：The wording is likely to lead to ambiguity.
这种措词可能会引出歧义YSP7Of&JPW=da。