By some estimates, banks have at least one trillion dollars in losses that they have not yet reported.

VOA: special.2009.01.30

And yet, it seems to me that there are many activities, and if not many at least several activities, that people do precisely for that reason.

然而，在我看来是有许多活动，如果算不上许多也至少是一些活动，是人们出于那个原因而去做的。

耶鲁公开课 - 死亡课程节选

I should also warn you that this code includes some Python concepts, at least one, that you have not yet seen.

我得事先说明这个代码中,包括了一些你没见过的Python语言的概念，至少一个。

麻省理工公开课 - 计算机科学及编程导论课程节选

He said to himself, "At least her poison has not gotten into my body yet."

VOA: special.2009.05.30