Under normal circumstances , I would say 'yes'.

一般情况下，我会说“行”。

It works out, under normal circumstances, very well.

在通常情况下，这样做十分有效。

Under normal circumstances there's a lot to this argument.

在正常情况下，这是有道理的。

The brain can do this quite easily under normal circumstances.

大脑能在普通环境下非常容易地做到这一点。

Under normal circumstances, rights issues are no cause for celebration.

在正常情况下，配股并不值得人们庆祝。