I have a hard head.

我的头很硬。

youdao

Kunta had been hit on the head with a hard object.

昆塔的头被一个硬东西打了一下。

youdao

In order to be able to play at a high level, it is necessary to train very hard and to keep the "head cold."

为了能高水平发挥，我就有必要刻苦训练，保持头脑冷静。

youdao

In order to be able to play at a high level, it is necessary to train very hard and to keep the "head cold."

为了能高水平发挥，我就有必要刻苦训练，保持头脑冷静。

youdao