可以组成单词helmet,意思是:n.头盔防护帽。

例句: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。

2、He locked his helmet into position with a click.

他喀哒一声把头盔扣好。

3、Do yourself a favour and wear a helmet on the bike.

要照顾自己,骑车戴上头盔。