The Mississippi as we know it today has basically only existed since the middle ages.

我们今天所知的密西西比河基本是从中世纪就开始存在的河流。

It's possible Mercury began life as much as 160 million kilometers further from the sun than it is today.

水星可能是在距离太阳比现在远 1.6 亿公里的地方开始存在的。

So science is already proving the evidence that these exist.

所以科学已经开始证明些存在的证据。

It was in the company's DNA from the beginning.

从一开始就存在公司的 DNA 中。

And yet I've come to appreciate the premise of partnership.

但我现在也开始欣赏同伴的存在。

Extrapolating backwards, that suggested there was a moment of creation — the universe didn't always exist.

反来推断，表明有一个创造的时刻——宇宙并不是一开始就存在的。

It's just math that's been existing since the beginning of time.

只是从一开始就存在的数学。

Queensland Institute of Technology technician, Gavin Broadbent, said they were skeptical at first.

昆士兰理工学院技术员加文·布罗德本特表示种想法，他们一开始是存在疑虑的。

My presence must have overawed him at first.

一开始我的存在一定吓坏了他。

How do you start seeing signs that were never there to begin with?

你是如何开始看到一开始就不存在的迹象的？

But with this huge and unprecedented surge in opportunity in population, Libya began hitting its ancient problem again.

但随着人口机会的空前激增，利比亚又开始遇到其一直存在的古老问题。

And I think both those things have been in my work from the beginning.

我认为两件事从一开始就存在我的工作中。

That may sound like a lot, but it’s only about half of what existed before human civilization began.

听起来可能很多，但它只是人类文明开始之前存在的一半左右。

You begin drowning in worries about dangers that aren't present. You begin not trusting family or friends.

你开始担心不存在的危险。您开始不信任家人或朋友。

" Early" is something that happens or exists near the beginning of a period of time.

“早期”是在一段时间的开始附近发生或存在的事情。

" Initial" is used more to talk about something that existed or occurred at the beginning of something.

“ “初” 多用谈论事物开始时存在或发生的事物。

And part of the process is the yeast will start to consume the sugars that are present in flour.

个程的一部分是酵母将开始消耗面粉中存在的糖分。

Then as I began to realize the problems it had , I was also very much concerned to survive.

然后当我开始意识到它存在的问题时，我也非常担心自己的生存。

Another negative trend started by the  Industrial Revolution that is still present is pollution and its effects on the environment.

另一个由工业革命开始至今仍然存在的负面趋势是污染及其环境的影响。

Human traffickers know that it's nearly impossible to find someone if there was never a record they existed in the first place.

人口贩子知道如果一个人从一开始就没有存在的记录，想要找到他们近乎是不可能的。