hoarfrost

US [ˈhɔrˌfrɔst]
UK [ˈhɔːfrɒst]
  • n.霜;白霜
  • Web霜降;树冰;浓霜
hoar frost
n.
1.
霜;冰霜a layer of small pieces of ice that look like white needles and that form on surfaces outside when temperatures are very low

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Definition:
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