🇬🇧 en zh 🇨🇳

ground frost noun

  • The frozen upper level of soil, caused by the air temperature dropping below the freezing point for a lengthy period of time; in temperate climates the soil thaws completely for the summer and in cold climates it may develop to permafrost.
 地表霜
  • Ice produced by the direct deposition of water vapor on grass, trees and other objects in freezing conditions.
 霜
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