I have a hard head.

我的头很硬。

youdao

Nancy swallowed hard and shook her head.

南希艰难地咽了一下口水，摇了摇她的头。

《柯林斯英汉双解大词典》

He went on to suffer a couple of hard hits to the head, which sent him to the hospital again.

他的头部受到了几次重击，再次被送往医院。

youdao

A company that can keep its head above water can survive economic hard times.

VOA: special.2009.05.10

It's really hard to think of all stuff off the top of my head.

脑子里一时想到的都说出来还真难呢。

只要是音乐就好 - SpeakingMax英语口语达人

"I came back the next day and I put little parachutes for the Kaugummi and the Schokoladen , so they could see it and so it wouldn't hit them hard in the head, slow it down.

VOA: special.2011.08.11

It's her hard head in the music business that's helped make her both a survivor and a pioneer.

NPR: Rockabilly's Wanda Jackson Hits Hall Of Fame

But he was careful not to confront the hard-liners head on.

CNN: ASIANOW - TIME Asia | Cover: The Son of Heaven?

New software and social platforms can discover the best and brightest, taking the most die hard recruiter, head hunter out of the picture, and allowing HR or your hiring teams to establish an immediate dialogue with a star.

FORBES: HR Technology: A Revolution for the World of Work