un·heard-of
adjective/ʌnˈhɜːd əv/
/ʌnˈhɜːrd əv/
- 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 Dictionaryverbs- be
- absolutely
- completely
- quite
- …
- He'd dyed his hair, which was almost unheard-of in the 1960s.