As far as I know。
双语例句：
据我了解，这种折磨已经持续很多年了。
It is my understanding that this torture has been going on for many years。
据我了解，目前对该问题尚未进行过正规的调查。
So far as I am aware, no proper investigation has ever been carried out into the subject。
据我了解，你沿板球场边来到拐角处，那个男的挡住了你的去路。
As I understand it, you came round the corner by the cricket field and there was the man in the road。
起先我还以为是一场意外，但是据我了解，警方认为那不太可能。
At first I thought it was an accident, but as far as I can make out, the police consider that's unlikely。
据我了解，他喜爱的是通俗歌曲。
Apprehend that he is rather addicted to profane song。
这把风琴看上去并不是很惹人喜爱，据我了解母亲就拒绝把它放到自己的房间，因此父亲只好把它带到了位于阿斯彭的房子，因为在他眼里这把风琴可是价值不菲。
It's not very attractive and I was told that my mother refused to have it in her house so my father put it in his Aspen home as he thought the organ was great。