Their helmets glanced in the sun.

他们的头盔在阳光下闪耀。

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Helmets come in many different shapes Some have plastic visors on the front to shield eyes from sun or rain.

头盔有不同种的类型，有些头盔的前方带有塑料帽舌是为了保护眼镜免遭太阳的暴晒和雨天的雨水。

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Because they're so light and have lots of openings for air to pass through, helmets aren't any hotter than having your head exposed to the sun while riding.

头盔轻，而且有很多的散热孔，和把头暴露在阳光下，感觉差不多。不会热。

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But the tourists bike up mountains undeterred by desert sun, trusting in health insurance and helmets to save them from the consequences of their bravado.

ECONOMIST: America��s great trek

The Piazza della Signoria was a riot of sun-pinked Russians, American students, and cops in white thimble-shaped helmets.

NEWYORKER: The Grand Tour