Officials have said they cannot speculate on the cause of the crash.

VOA: standard.2010.05.23

Those are easy. There's no getting around reading those things, and then it gets to be more interesting as we speculate.

这些都是显而易见的,还有些历史是,没有记录的,靠的是人们丰富的联想

耶鲁公开课 - 古希腊历史简介课程节选

We speculate there may be neutronic mail here.

我们推测这应该有电子邮件。

麻省理工公开课 - 固态化学导论课程节选

Clinton,appearing at the State Department's daily press briefing, said she did not want to speculate on Iran's political future, but she that the reported recount is unlikely to do much to defuse election-related tensions.

VOA: standard.2009.06.29

So what can we speculate is the meaning of that?

那么我们可以从这里推测出什么呢

耶鲁公开课 - 古希腊历史简介课程节选

One of the things you kind of speculate about, and wonder about, why did some cities send out lots of colonies, some cities send out only a few, and others none at all for quite a while.

也许你感到疑惑的一件事是,为什么有些母邦派出了大量移民,另一些只有一些移民,还有其他母邦在很长时间根本没向外移民呢

耶鲁公开课 - 古希腊历史简介课程节选