The doctors speculate that he died of a cerebral haemorrhage caused by a blow on the head.

医生们猜测他死于头部撞击引起的脑溢血。

《柯林斯英汉双解大词典》

He struck me a blow on the head.

他在我头上打了一拳。

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She was dazed by a blow on the head.

她头上挨了一击，使她感到眩晕。

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But a blow on the head has left Simon unable to remember where the rolled-up treasure may be.

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While he was zipping it up again he was struck, a blow on the right side of his head.

NEWYORKER: Bravado

Chambers refused to blame an incident in training on Thursday when a blow to the head from a football left him unconscious.

BBC: Lewis-Francis downs Chambers