1.  helmet
2.  safety helmet
3.  motorcycle safety helmet
4.  crash helment

• 1. 安全帽: helmet | safety helmet | Hard Hat | safety cap
• 2. 机车安全帽: motorcycle helmet
• 3. 安全帽灯: safety cap lamp | WX-A

更多释义

• 1.也可以使用安全帽贴纸。
  Helmet stickers can also be used.
  dict.yoduao.com
• 2.提供安全帽和护耳。
  Hard hats and ear protectors are provided.
  dict.yoduao.com
• 3.在建筑工地一定要戴上安全帽。
  Be sure to have a helmet on at building sites..
  dict.yoduao.com

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