This cased an obviously negative phase of the AO and brought strong winter monsoon and eastward tracks of cold waves into East Asia, which led to a weakening of cold air arrived in Southwest China.

由于AO为负值，东亚冬季冷空气活动强且路径偏东，使得达到西南地区冷空气偏弱。

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This cased an obviously negative phase of the AO and brought strong winter monsoon and eastward tracks of cold waves into East Asia, which led to a weakening of cold air arrived in Southwest China.

由于AO为负值，东亚冬季冷空气活动强且路径偏东，使得达到西南地区冷空气偏弱。

youdao