hard hat
英
美
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Noun:
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a worker skilled in building offices or dwellings etc.
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a lightweight protective helmet (plastic or metal) worn by construction workers
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用作名词 (n.)
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You'll have to wear this hard hat for the tour.
参观时必需戴上这安全帽。
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Hard hats and ear protectors are provided.
提供了安全帽和护耳。
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