It is nearly impossible to know how our actions are perceived by others.

至于别人对我们做法究竟作何，确是无从知晓。

Gas is there in abundance, but how much is unclear.

此地油气十分丰富，但储量多少尚未知晓。

I had no experience in this realm with my grandparents and no way to gauge what the consequences might be.

我以前从未遇到过这种状况，因而也无从知晓会有什么后果发生。

They're the cause of population movements whose scale we have yet to fully realize.

它们是人口迁徙原因。其规模我们尚未知晓。

Obviously I'm privy to official secrets by virtue of my position.

显然，凭借我职位，我有权知晓官方机密。

The ordinary feelings which make life amiable and indolent, were unknown to him.

赋予生命以和蔼和懒惰这些特质正情，他无从知晓。

The system defines a generic set of knowledge that all children must know.

这套制度定义了一套所有孩童都必须知晓知识。

Meaning these images could be a good proxy for ethylene measurements, and let farmers know the best time to harvest.

而这些图像可以作为衡量乙烯很好标准，帮助农民知晓收获最佳时机。

Here to get you up to speed on current events.

我们会让你足不出户快速知晓天下事。

The mystery here is where it came from, no one knows yet.

其神秘之处在于，这些原油来处无人知晓。

And yet, there is much we never heard, never saw, and never knew, until now.

然而，有许多事情我们从未听说过，从未看到过，也从未知晓，直到现在。

The new challenge will be knowing if those discarding their masks really are fully vaccinated.

问题在于，如何知晓没有配戴口罩人是真完全接种了疫苗。

And I only found out anything about this dark underbelly, because I started looking into Trump's relationship to Farage, into a company called Cambridge Analytica.

而我也是刚刚知晓这隐秘领域，因为我在调查一家叫剑桥数据分析公司与特朗普之间关系。

First, here's how to know if a flood is coming your way.

首先讲是知晓洪水即将爆发方法。

It takes a little while to uncover some of those things.

但只有在事情结束之后我们才得以知晓事情全貌。

Your results are taken before and after an event.

后果在事件发生之后才能知晓。

You know, we see another aspect of how the human body is affected by microgravity for the long-term and that's really important for our future spaceflight plans going forward to the moon and to Mars.

我们可以知晓微重力如何在长时间段内影响人体，这对我们未来计划球或者火星太空旅行至关重要。

Exactly what goes on at Dugway is, well, pretty unclear.

在达格威到底发生了什么无人知晓。

You can have a leading brand, a major brand, well-known brand, a brand identity, which are the visible elements of a brand such as color design and logo and brand awareness, which is how aware people are of your brand?

你可以说领头品牌，大牌，名牌，品牌身份。它指是某个品牌可以看到元素，比如颜色设计，标识，还有品牌认知度，意思是人们对你品牌知晓程度。

You guys need to know – all you troublemakers out there – you need to know that your fearlessness does not go unnoticed.

所有叛逆者们，“制造麻烦家伙们”，你们要知道，你们无畏不会无人知晓。