"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。

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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

The elephants look up and watch as your boat turns away and you head back to camp at the end of another day on safari in Africa.

VOA: special.2009.08.19

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

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

She holds your head back with the force of her whole life, and eventually you give up, demoralized.

NEWYORKER: Miss Lora

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