英語一句可解?

the mystery confounds in all contexts : the bottom line truth that we don't understand (still a mystery to us )

It probably refers to somethings said before like smokers come from all walks of life. Well educated people smoke; uneducated people smoke; wealthy people smoke; poor people smoke; people smoke under pressure; people smoke at leisure; men smoke; women smoke; boys smoke; girls smoke etc. There is no clear indication what causes people to smoke. So the author concludes, at the end, we don't know the ultimate truth why people smoke.

2012-02-06 03:22:01 補充：
I think you can literally replace the phrase with this phrase of the same meaning :

the mystery which baffled us in very instance

"the mystery which baffled us in very instance" is a phrase,
but "the mystery confounds in all contexts" is not .

2012-02-06 20:16:52 補充：
The above should be:
"the mystery which baffled us in every instance" is a phrase,
but "the mystery confounds in all contexts" is not .
The paraphrase of "the mystery confounds in all contexts" should be written as
"the mystery baffles us in every instance".

"the mystery confounds in all contexts" 你可解作
The mystery puzzles us in all cases.
這迷團在所有情況下也困惑(我們)。

[ 情況是: (1) 重癮者 (2) 淺癮者 (3) 非吸煙者]