to the best of my knowledge
US /tə ðə bɛst əv maɪ ˈnɑlɪdʒ/
UK /tə ðə bɛst əv maɪ ˈnɑlɪdʒ/

1.
據我所知, 在我所知範圍內
based on what I know or understand; as far as I know
:
•
To the best of my knowledge, he has never been late for work.
據我所知,他上班從未遲到過。
•
The report is accurate, to the best of my knowledge.
據我所知,這份報告是準確的。