hitherto
US /ˌhɪð.ɚˈtuː/
UK /ˌhɪð.əˈtuː/
副词
迄今, 到目前为止
until now or until the point in time under discussion
示例:
•
The research has revealed facts hitherto unknown.
这项研究揭示了迄今为止不为人知的事实。
•
He had hitherto been a quiet and unassuming man.
他迄今为止一直是个安静谦逊的人。