詞根來自拉丁語oner意為burden。 1.exonerate [使從沉重的行李、負(fù)擔(dān)中解脫出來ex(=out) + oner(=burden)] vt. 免除（責(zé)任、義務(wù)、苦難等）；證明...無罪 exoneration n.免除；釋罪 Many convicted criminals have been exonerated by DNA evidence.很多被宣告有罪犯依靠DNA證據(jù)被證明無罪。 2.onerous adj.繁重的；麻煩的 onerous duties 繁重的稅