名词
中文翻译：无霜日
同义词：
['frost-free', 'clear day', "sunny day例句：1. This year's Frost-Free Day is on Saturday", 'so we decided to go out for a picnic.（今年的无霜日是周六，所以我们决定出去野餐。）']
例句：
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1. This year's Frost-Free Day is on Saturday, so we decided to go out for a picnic.
今年的无霜日是周六，所以我们决定出去野餐。
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2. The Frost-Free Day event attracted many people to the city center.
无霜日活动吸引了许多人来到市中心。
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3. We spent the entire day enjoying the Frost-Free Day sunshine and playing in the park.
我们整天都在享受无霜日的阳光和在公园里玩耍。