在120具骸骨中，四分之一是头部或身体受伤致死的，因为不存在骨头愈合迹象以及其他迹象。

One-quarter of 120 skeletons displayed head and body injuries inflicted at the time of death, as indicated by a lack of healed bone and other clues.

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美国每年有超过700单车骑行者因未佩戴头盔，与汽车相撞而致死，其中还有75%头部受伤。

S. every year, almost all in collisions with cars, and 75% of them die of head injuries.

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