We made a conjecture about it.

针对这件事我们做出了一个推测。

It was a conjecture, I have no idea what he's thinking about.

那只是个猜测，我不知道他在想什么。

I can only conjecture that he might be drunk.

我只能推测他可能喝醉了。

The truth of his conjecture was confirmed by the newspaper report.

新闻报道证明了他的推测果然不假

That was a conjecture, not a fact.

那是个推测，不是事实。

We can only conjecture about what was in the killer's mind.

我们只能猜测当时凶手心里想的是什么。

The rumour raised a storm of conjecture.

这谣言引起了一阵猜测。

The truth of his conjecture was confirmed by the newspaper report.

新闻报道证明了他的推测果然不假。

What was going through the killer's mind is a matter for conjecture.

凶手作案时心里是怎样想的，这个问题只能由人们去推测了。