名词短语
中文翻译：四个月无霜期
同义词：
['frost-free period', 'frost-free season']
例句：
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1. The four-months frost-free period is crucial for the growthof crops.
四个月无霜期对农作物的生长至关重要。
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2. During this four-months frost-free period, farmers can plant theircrops.
在这四个月无霜期内，农民可以种植他们的作物。
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3. The four-monthsfrost-free period is a welcome relieffrom the harsh winter weather.
四个月无霜期是对抗严酷冬季天气的欢迎解脱。