Most of us think we have this all down pat, but for all we know, we might be wrong.

我们大多数人认为，我们这所有相声，但我们都知道，我们可能是错误的。

For the first time in the universe, for all we know.

据我们所知，这是宇宙中的首次。

After all, there's nothing to prove that she is unhappy. For all we know they may have settled down into a most domestic couple.

归根结底，现在还没有迹象说明她生活得不幸福。据我们所知道，说不定这两人已经象夫妻一样过起日子来了。

They're actually using other PFAS molecules, which may, for all we know, carry worse health consequences.

他们实际采用的是其它的PFAS分子，就我们所知，这可能会招致更严重的健康问题。

For all we know, this space could be nestled in an apartment building, but it feels like a charming seaside bungalow.

在我们的观念中，这种房间一般出现在公寓宿舍中，但它却让人感觉置身于海边别墅中。