The straight white parting in her ebony hair seemed to divide the back of her head in half.

她乌黑头发中笔直的白色分发线似乎把她的后脑勺分成了两半。

《柯林斯英汉双解大词典》

First to the back of her head, then gone.

先是跑到脑后，接着消失了。

youdao

The straight white part in her ebony hair seemed to divide the back of her head in half.

她乌黑的头发中有条笔直的白色分缝，仿佛将她的后脑勺一分为二。

youdao

The family later noticed that the back of her head was flattened, and she was diagnosed with severe plagiocephaly, sometimes referred to as 'flat head syndrome', by a specialist clinic in Leeds.

BBC: Molly Askam

On the first point after a 10-minute pause in the third set while fireworks boomed from nearby Australia Day celebrations, Li fell over again and slammed the back of her head on the court.

WSJ: Azarenka Beats Li to Win Australian Open

Seated across from her, I was able to look beyond her strained face to the back of her head, the back of her blouse collar showing through her hair, the top of her shoulder blades.

NEWYORKER: Miracle Polish