- that has never been known or done; very unusual前所未闻的；空前的；很反常的
- He'd dyed his hair, which was almost unheard-of in the 1960s.他染了头发，这在 20 世纪 60 年代是罕见的事。🔊🔊
- It is almost unheard-of for a new band to be offered such a deal.一支新乐队得到这样的一份合同，几乎是空前的。🔊🔊
- At that time, it was completely unheard-of for girls to go to university.在那个时候，女孩子上大学绝对是前所未闻的。
- He was sentenced to a hitherto unheard-of seven life terms in prison.他被判处 7 次终身监禁，该量刑迄今为止绝无仅有。
Oxford Collocations Dictionaryverbsadverb- absolutely
- completely
- quite
- …
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