helmet例句

A man in a crash helmet was mounting a motorbike.
一位戴头盔的男子正跨上摩托车。

He pulled on a battered old crash helmet with a scratched visor.
他戴上了一顶破旧的防护头盔，上面的面罩已有划痕。

Miners wore a helmet as a guard against falling rocks.
矿工头戴钢盔,防护落下的岩石.

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