My husband spends hours in the bathroom, but then again so do I.

我丈夫总在浴室泡数小时，不过话说回来，我也一样。

We might buy it but then again we might not.

我们可能买，不过也可能不买。

She was early, but then again, she always is.

她到得早，不过话又说回来了，她总是早到。

He might agree. But then again he might have a completely different opinion.

他可能同意，但也可能会意见完全相反。

But then again, she may not.

但也有可能不会。