There is club convergence only in the east region among the three major regions.
三大地区中只有东部地区存在俱乐部收敛现象。
Songnen plain in the western of Jilin province is one of the three major regions of soda salt-alkalinized soil in the world.
吉林省西部的松嫩平原是世界上三大苏打盐碱地集中分布区之一。
One major finding is that three chronic disease risk factors, tobacco use, raised blood pressure and raised cholesterol, are among the top ten causes of disease in all regions, including Africa.
一项主要发现是，三种慢性病危险因素—烟草使用、血压和胆固醇的增高处于包括非洲在内的所有地区的前10位致病因素中。
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