everfrost

例句：

1. 1.The everfrost is a rare and beautiful flower that blooms only in winter.
   冬日的霜冻是一种罕见的美丽花朵，只在冬季绽放。
2. 2. During the everfrost, it's important to keep warm and dry.
   在霜冻期间，保持温暖和干燥很重要。
3. 3. The everfrost can cause damage to crops and infrastructure during the winter months.
   霜冻在冬季月份可以对农作物和基础设施造成损害。