polar sequence

例句：

1. 1. The polar sequence is a crucial part of the climate modeling process.
   极地序列是气候建模过程的关键部分。
2. 2. The polar sequence plays a significant role in determining the Earth's climate patterns.
   极地序列在确定地球气候模式中起着重要作用。
3. 3. The polar sequence has been studied extensively in recent years, revealing new insights into theEarth's climate system.
   近年来，对极地序列的研究非常广泛，揭示了关于地球气候系统的新见解。