At best Nella would be an invalid; at worst she would die.

最好的情况是内纳会成为一个残疾人，最糟糕的情况是她会死亡。

This policy, they say, is at best confused and at worst non-existent.

他们说这项政策说好听点是混乱不清，说不好听点就是根本不存在。

At worst, you'll get a good laugh out of it.

最坏的情况下，你最多会得到一些善意的嘲笑而已。

At worst, the economy might succumb to debt-deflation.

在最糟糕的情况下，经济可能陷入债务通缩的局面。

The overall impact in Northern California is at worst, minimal.

即使受到最大冲击的北加州，也只受了些微小影响。