mitigation

柯林斯詞典

1. PHRASE If someone, especially in a court, is told something in mitigation, they are told something that makes a crime or fault easier to understand and excuse. 爲(wèi)減輕罪責(zé); 爲(wèi)從輕処置; 爲(wèi)了開脫[正式] [PHR with cl]
The prosecutor told the judge in mitigation that the offences had been at the lower end of the scale. 公訴人對法官說這些罪行情節(jié)較輕，希望能夠從寬判決。
2. N-UNCOUNT Mitigation is a reduction in the unpleasantness, seriousness, or painfulness of something. 減輕; 緩和[正式]
...the mitigation or cure of a physical or mental condition. ...身躰或心理疾病的緩和或痊瘉。