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1·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。《牛津词典》

2·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。《牛津词典》

3·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。《柯林斯英汉双解大词典》

4·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。《柯林斯英汉双解大词典》

5·We all wore bicycle helmets.

我们都戴着自行车头盔。

6·These policemen wear helmets to protect themselves.

这些警察戴着头盔保护自己。

7·The cyclists should be fined for not wearing helmets.

骑自行车的人不戴头盔应该被罚款。

8·People refuse to wear helmets because they're thick and heavy.

人们拒绝戴头盔，因为它们又厚又重。

9·The cyclists should use the cycle lanes and wear helmets and fluorescent jacket at night.

骑自行车的人应该使用自行车道，晚上戴头盔和穿上发荧光的夹克。

10·It is just as strong as traditional helmets, but it can be folded almost completely flat, making it easier to carry.

它和传统头盔一样坚固，但它几乎可以完全折叠压平，便于携带。

(1)safety helmet安全帽，安全头盔

(1)motorcycle helmet摩托车头盔

(1)welding helmetn. 焊工帽；焊工面罩

(1)crash helmet安全帽；（飞行员，摩托车驾驶员等的）防撞头盔

(1)steel helmet钢盔