Usage priority
Collins 词频等级为 2，建议结合例句记忆，而不是只背中文释义。
头盔；安全帽；防护帽
helmets — plural of helmet
先理解核心含义，再看它在真实句子里的用法。
头盔；安全帽；防护帽
a hard protective head covering, often part of armour or safety equipment
Before riding his motorcycle, Tom always puts on his helmet.
骑摩托车前，汤姆总是戴上头盔。
头盔；防护帽。
A hard, protective head covering, typically part of armour.
保护头部的盔甲片
armor plate that protects the head
头盔状物。
That which resembles a helmet in form, position, etc.
坚硬材料制成的防护头盔
a protective headgear made of hard material to resist blows
Workers on the construction site must wear a hard helmet at all times.
建筑工地上的工人必须始终佩戴安全帽。
She bought a new bicycle helmet with bright lights for night riding.
她买了一个带亮灯的新自行车头盔，用于夜间骑行。
Choose the next layer that will help you use helmets with more confidence.
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Use helmets naturally, then get feedback on meaning, tone, grammar, and phrasing.
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Collins 词频等级为 2，建议结合例句记忆，而不是只背中文释义。
页面下方列出了常见词形变化。学习时注意它们在句子中的语法位置。
Dictionary facts from DICTIONARY_API_DEV, ECDICT, WIKTIONARY.