for all one knows的用法和樣例：
例句
- I'll sit up for a time, in case I may be wanted.
我先不睡，說不定會通知得著我。 - For all I know she's still living in Boston.
說不定她還住在波士頓。
- It might have been tomato soup for all we know.
這是番茄湯亦未可知。 - When you are ill make haste to forgive you enemies, for you may recover.
當你有病之際，趕快寬恕你的仇人吧，因為你可能復原也未可知。
