Decreases in malaria deaths have been observed in all WHO regions, with the largest proportional decreases noted in the European region, followed by the region of the Americas.

世卫组织各区域的疟疾死亡人数均已降低，其中降幅最大的是欧洲区域，其次是美洲区域。

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The special feature of variable rate reaching law is that it is directly proportional to the norm of state vector and can result in a sector-shaped switching region.

以变速趋近律为到达条件，可产生扇形切换区，并可期待原点的稳定性。

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And an average of four additional members in each region 20 in total will be chosen by a formula which makes each party's total seats in a region roughly proportional to its total number of votes.

ECONOMIST: Through the looking glass