And 'since' to talk about points in time.

而 since 则用来谈论时间点。

'Since' is about points in time.

“since”是关于时间点的。

It's something that we feel at certain points in time under certain conditions.

它是我们在特定的条件下，在特定的时间点上的感觉。

Use since for a specific point in time.

对于特定的时间点使用 since。

Researchers also only tested smell at one point in time.

研究人员也只是测试了某一时间点的嗅觉状况。

" At" is generally used in reference to specific times on the clock or specific points of time in the day.

" At" 通常用于指特定的钟点时间，或者是一天中特定的时间点。

And then the board makes a decision at that point in time.

然后董事会在那个时候做出决定。

It can be the point in time when something happens or begins.

可以是某件事发生或开始的时间点。

Now unfortunately, at this point in time you haven't said anything yet.

不幸的是，此时此刻你还什么都没说。

Branches can be added and removed at will at any point in time.

它的枝叶也可以随时长出或者剪掉。

At that point in time, it was one of Earth's largest hunters.

在那个时候，它是地球上最大的捕食者之一。

I got to see exactly what I saw at that given point in time.

我可以看到那一个时间点我看到的东西。

At this point in time we do not have a way of stopping transmission.

在这一点上，我们还没有停止传播的方法。

I think this was definitely the point in time when my team hated me.

我想正是从这个时间点开始我的同事开始" 恨" 我了。

So the Wall Street crash was an event that maked a point in time.

所以华尔街危机是一个时间点上的事件。

What did the police say they know about his motive at this point in time?

目前警方有透露凶手的动机吗？

" There was a point in time I wasn't comfortable standing here, " said Kodi Mills.

科迪·米尔斯说：“有一段时间，我站在这里就感到不舒服。”

Maybe at that point in time, you don't need a lot of humility right then.

也许在那个时候，你不需要太谦虚。

And this is improving with time, but at this point in time, it's not too great.

当然这会慢慢加以改进，但在此时此刻，效果并不令人满意。

But it's also because Klushino at this particular point in time was undergoing a painful decade.

克卢申诺村曾在某个特定的时间点经历了痛苦的十年。