Relax your head and back of neck.

放松头部和颈部后侧。

youdao

Happy couples are pleased to be seen together and are often in some kind of affectionate contact - hand on hand or hand on shoulder or knee or back of neck.

幸福夫妻总是很乐意被看到在一起，也经常会有亲密的小举动——手挽手，手搭在肩上、膝盖上或者是脖子上。

youdao

The hairs on the back of my neck prickled when I heard the door open.

听到开门声，我颈后汗毛倒竖。

《牛津词典》

When I am facing a lot of pressure at work, my back and neck will start to hurt.

VOA: special.2010.01.24

It watched the back of his neck and hat for a minute, and then a hand came in and sat on his shoulder.

他从后面看了看,那个人的脖颈和帽子，然后将手伸进了车窗,搭在了他的肩上。

耶鲁公开课 - 1945年后的美国小说课程节选

A thick mane grows from the top of the head and down the back of the neck.

VOA: special.2010.06.22

This is often intensely itchy and sometimes spreads to the back of your neck or your back (depending on the length of your hair).

CNN: Why is my scalp so itchy?

The hairs on the back of your neck stand at attention, and an emotional mix of awe and sympathy takes hold.

BBC: Migration and the Masai Mara

One is feeling the hot breath of the media on the back of my neck and the other is sensing the cold disapproval of the church hierarchy for daring to break ranks.

BBC: UK