as far as I (can) remember
私の記憶では
as far as I can gather
私の推測する限りでは
as [so] far as I can judge
私の判断する限り
As far as [From what] I can make out, he is guilty.
私が知る限りでは彼はクロだ
As far as I can see it is not technically possible.
私の理解する限りではそれは技術的に不可能だ
as far as I know
私の知る限り
as far as I know [I can remember]
((略式))私の知るかぎりでは
as far as that goes [that is concerned]
((略式))そのことについて言えば（◆主節が否定文の場合so far asが好まれる）
as far as the eye can see [reach]
見渡すかぎり
As far as the quality is concerned, it's perfect.
質に関する限り完ぺきだ
