Helmets can give cyclists a false sense of security.

头盔能给骑自行车的人一种虚假的安全感。

It is compulsory for all motorcyclists to wear helmets.

所有骑摩托车的人都必须戴头盔，这是强制性的。

Helmets will be available for hire at all Vail Resort ski areas.

在韦尔度假村的所有滑雪场里都有头盔供出租。

The helmets are designed to withstand impacts equivalent to a fall from a bicycle.

头盔设计成能承受相当于从自行车上摔下来的力度。

We all wore bicycle helmets.

我们都戴着自行车头盔。