1. 288.Over the last few decades it has been a common practice to view the atmosphere from a zonally averaged perspective.
   在过去的几十年中，从纬向平均的角度来研究大气是通常的做法。
2. Over the last few decades it has been a common practice to view the atmosphere from a zonally averaged perspective.
   在过去的几十年中，从纬向平均的角度来研究大气是通常的做法。

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