repeated cycles of freezing and thawing

例句：

1. 1.The repeated cycle of freezing and thawing is a constant reminder of the harshness of nature.
   反复的冰冻和融化周期是自然界严酷性的不断提醒。
2. 2.The repeated cycles of weather patterns are essential for understanding climate change.
   反复的天气模式对于理解气候变化至关重要。
3. 3. The repeated cycles of growth and decay are fundamental to life on Earth.
   生长和衰败的反复循环是地球上生命的基础。