B2 据我所知
from what I know and understand from the information that I have
To the best of my knowledge, the chemicals which were found are not dangerous. 据我所知，那些被发现的化学品没有危险性。
He didn't speak to us and nor, to the best of my knowledge, did he speak to any of our friends or family.
To the best of my knowledge, there have been no cases of poisoning caused by consumption of these fish.
To the best of my belief, these letters were written by my aunt.
The man I saw was, to the best of my belief, the accused.
He told police that, to the best of his belief, she hadn't been by since Tuesday.
See also: best noun