昨晚温度骤降,今早窗玻璃上结满了霜花。

The temperature dropped suddenly last night, and the windows were covered with frost this morning.

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The temperature dropped suddenly last night, and the windows were covered with frost this morning.

frost 是名词,指"霜",指在寒冷天气中水蒸气直接凝结在物体表面形成的白色冰晶。

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