"Eyes in the back of your head" describes the ability to notice everything happening around you.

“后脑勺的眼睛”描述的是注意周围发生的一切的能力。

youdao

If you use mirrors you can see the back of your head.

使用两个镜子能看见自己的头的后部。

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I think it's in your brain, the back of your head.

应该是在大脑中，后脑勺那里。

youdao

I think it's in your brain, the back of your head.

应该是在大脑中，后脑勺那里。

耶鲁公开课 - 弥尔顿课程节选

Only the back of your head will be seen.

观众们只能看见你的后脑勺

耶鲁公开课 - 基础物理课程节选

I hope that you'll have that in the back of your head when we get to the story of Athens and the invention of democracy, because it was off the wall from the perspective of Greek tradition.

我希望,当我们讲到雅典神话,以及民主制的诞生时,你们还记得这点,因为从希腊人的传统观点来看,这是很不寻常的

耶鲁公开课 - 古希腊历史简介课程节选

One thing leads to another and you and your team head back in time to feudal Japan where you find one of your Cooper ancestors, Riochi Cooper, is in trouble.

FORBES: Connect

You don't want to find yourself head-over-heels in a relationship that holds you back for the rest of your life.

FORBES: Magazine Article

There's no mistaking the sheer amount of equipment strapped to your head -- not to mention the Lenovo laptop on your back -- but the effort does create an immersive virtualization of the player's body where walking, arm movements and body lean all work more or less as you'd expect.

ENGADGET: Project Holodeck gets a virtual hands-on ahead of launch (video)