unprecedented
🇺🇸
/ʌnˈpresɪdentɪd/
🇬🇧
/ʌnˈpresɪdentɪd/
adjective
C1
never happened before
The pandemic caused unprecedented changes in how people work.
这场大流行导致了人们工作方式上前所未有的变化。
translation
前所未有