You can see the lesions in infected lung tissue with the naked eye.

你可以用肉眼看到被感染肺组织中病变。

And remember, to the naked eye you can barely see this tiny white spec.

记住，用肉眼你几乎看不这个白斑点。

But to the naked eye, it looks like a cat can.

但是用肉眼看，看起来猫可以这么做。

It's such a small amount that you can't see it with the naked eye.

因为反射光量太了，我们甚至不能用肉眼看。

Macro is something you can see with the naked eye.

宏观营养素是你可以用肉眼看到东西。

However, that's just what you can see with the naked eye.

然而，这只是你用肉眼所能看到。

When you're seeing the visible you're really seeing the surface of the sun.

一般用肉眼观察只看得到太阳表面。

" Most nematodes, you can just barely see."

“大多数线虫几乎无法用肉眼看。”

But with Fomalhaut b, astronomers could actually see the planet.

但“北落师门b”却是个例外，宇航员们确实用肉眼看了它。

And its greenish blue glow may be visible to the naked eye.

可能用肉眼就能看到它绿蓝辉光。

This first light is no longer visible, but it's there.

虽然这缕创世之光已无法用肉眼观察，但它仍然存在。

If you stare at the eclipse with your naked eye, you're going to injure your eyes pretty badly.

如果你用肉眼盯着日食看，你眼睛会受到很严重伤害。

He said he loves the fact that he will see with his own eyes from his own home.

他说自已喜欢在家里用肉眼观看感觉。

It is also possible to see with one's own eyes in the darkest corners of the Northern Hemisphere.

人们也可以在北半球最黑暗角落用肉眼看到。

This makes their noses glow on a thermal camera, and sometimes they even look red to the naked eye.

这使它们鼻子在热像仪上发光，并且有时甚至用肉眼看也是红。

In fact, the single most massive chunk of Earth's biomass can't even be seen with the naked eye.

实际上，地球上最大生物量甚至无法用肉眼看到。

Unlike during a solar eclipse, it's safe to look at the moon with the naked eye during a lunar eclipse.

不像日食期间那样，在食期间用肉眼就可以看亮。

That cloud is cold and dark, and so we don't see it by eye.

那片云又冷又黑，所以我们无法用肉眼看到它。

But it can be seen with the naked eye when the moon blocks the sun during a total solar eclipse.

但在日全食期间，当亮挡住太阳时，人们可以用肉眼看到它。

That's why we build different kinds of telescopes — to detect the kind of light our eyes can't detect.

这就是为什么我们建造了不同种类望远镜原因——用来探测我们无法用肉眼探测到光。