柯林斯詞典helmet /?h?lm?t/ (helmets) 1. N-COUNT A helmet is a hat made of a strong material which you wear to protect your head. 頭盔 返回 helmet劍橋詞典a strong , hard hat that covers and protects the head 頭盔，安全帽 a crash helmet 防撞頭盔 a bicycle helmet 摩托車頭盔 例句 It's very risky to ride your bike without wearing a cycle helmet.To keep the helmet in position , fasten the strap beneath the chin .Is the strap on this helmet adjustable ?He pulled on his helmet and straddled the motorbike .You cannot come onto the building site unless you're wearing a helmet. 返回 helmet