1 a. used to say that someone opposes or disagrees with something b. used to say that an action is not wanted or approved of by someone c. used to say that something is not allowed by a law or rule 〔法律或法规〕禁止
他建议我不要去旅行。
对妇女的歧视
法规往往对较小的公司不利。
8 used to show that you are considering particular events in relation to other events that are happening at the same time 在…情况下; 在…背景下
改革是在社会动荡的背景下开始的。
他一直断然否认对他的指控。