partially melted snow (or a mixture of rain and snow)
Verb:
precipitate as a mixture of rain and snow;
"If the temperature rises above freezing, it will probably sleet"
sleet的用法和樣例：
例句
用作名詞 (n.)
The sleet stuck to the branches of trees, reflecting the light from the street lamps. 雨雪凝結在樹枝上，反射著街上的燈光。
The external walls of buildings subsystems can effectively prevent reversal of radiation protection, food warming plates from sleet erosion. 其中的外牆子系統能有效防止冷熱對建築物的輻射，保護外保溫板不受雨雪侵蝕。
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