柯林斯詞典onus /???n?s/ 1. N-SING If you say that the onus is on someone to do something, you mean it is their duty or responsibility to do it. 責任; 義務[正式] The onus is on companies and consumers to keep up with anti-virus updates. 公司和用戶有責任跟上殺毒軟件的更新。 返回 onus