He went for at least a week

至少───at least;一周───a week

At least he knew right from wrong.───至少他明白是非。

The old lady was still being ornery, but at least she had consented to this visit.───这位老太太脾气还是那么犟，但至少她已经同意接受此次拜访。

There have been at least thirteen previous attempts to reach the North Pole unaided.───之前至少已经有过13次想独立到达北极的尝试。

He left last Tuesday — at least, I think he did.───上星期二他离开了,反正我认为他已经走了.

At least one British officer was feeding him with classified information.───至少有一个英国官员在向他提供机密情报。

At least seventy students were injured in the continuing agitation against the decision.───至少有70名学生在反对该决定的持续抗争中受伤。

The market is at least ticking over.───至少市场还在缓慢发展。

It'll cost at least 500 dollars.───这东西至少要花500元。