Some scientists speculate it's serendipity that plants today are green.

些科学家推测，现在的植物为绿色只是巧合。

From a few bones, we infer the existence of dinosuars.

从几块骨头， 我们能推测出恐龙的存在。

Speculating means talking about something you aren't sure about.

推测的意思是谈论你确定的事情。

And presumably, the resulting liquid is safe.

据推测，所得到的液体是安全的。

But she only sees one, so she deduces that her hat is also black.

但是她只看到了， 所以她推测出自己的也是黑帽子。

But most of us are reluctant to start these conversations because we presume the opposite.

但是我们大多数人意开始这些谈话，因为我们推测的情况正好相反。

It's conjecture, but creative, which is why you got the " a."

只是你的推测，过有那么点创意，这就是你能得A的理由。

It wasn't the islands archipelago that it was speculated before.

它是之前推测的群岛。

My guess is that we will survive in direct proportion to how much we can learn.

我的推测是我们的生存能力跟我们的学习能力成正比。

It is presumed that early males and females had sex with many partners.

据推测，早期的人类会与许多异性交配。

Perhaps willfully, it may be easier to think about such lengthy timescales than about the more immediate future.

过很有意思的是推测万年后的事物往往比推测明天要发生什么容易得多。

This spring there is supposed to be a cold spell.

据推测那儿今年的春天会很冷。

So the first trick is to use this information and make an educated guess.

所以，第技巧就是利用这信息来做出有根据的推测。

Bill, that was a fair guess, but you got it wrong. Bad luck.

Bill，这是合理的推测，但是你答错了哦，运气好。

Now, while CR7's World Cup future is based on speculation, Neymar's is pretty certain.

虽然 C 罗之于世界杯的未来是基于推测，内马尔的未来规划是相当确定的。

As the sending happened in the past, we are speculating about a past possibility.

因为送卡片的事情发生在过去，我们是在推测发生在过去的种可能性。

Most books about the Masons speculate on the extent to which they have shaped history.

大多数描写美生的书籍在推测其对历史的塑造程度。

The authors speculate that heavier people might be more embarrassed by interacting with another person.

作者推测，体重较重的人在与另人互动时可能更容易感到尴尬。

Any analysis ahead of action is purely speculation.

在行动之前的任何分析是纯粹的推测。

A smart man once said to me that speculation is a poor form of politics.

位智者曾对我说推测是种好的政治手段。