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

我们今天所知密西西比河基本是从中世纪就开始存在河流。

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 亿公里地方开始存在。

So science is already proving the evidence that these exist.

所以科已经开始明这些存在。

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

这从一开始就存在公司 DNA 中。

Asteroids are ancient objects from the beginning of the solar system.

小行星是太阳系开始时便存在古老天体。

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

但我现在也开始欣赏同伴存在。

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

这只是从一开始就存在数。

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

昆士兰理工术员加文·布罗德本特表示对于这种想法，他们一开始是存在疑虑。

My presence must have overawed him at first.

一开始我存在一定吓坏了他。

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迹象？

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

但随着人口机会空前激增，利比亚又开始遇到其一直存在古老问题。

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

我认为这两件事从一开始就存在于我工作中。

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

这听起来可能很多，但它只是人类文明开始之前存在一半左右。

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”是在一段时间开始附近发生或存在事情。

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

“ “初” 多用于谈论事物开始时存在或发生事物。

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

这个过程一部分是酵母将开始消耗面粉中存在糖分。

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问题时，我也非常担心自己生存。

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负面趋势是污染及其对环境影响。

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记录，想要找到他们近乎是不可能。