The finding was particularly important in many African countries where raising health workers' wages is expensive and often leads to demands for wage increases from civil servants in other sectors.

对提高工资水平比较困难且导致其他部门公务员也要求涨工资的很多非洲国家而言，这一发现有着特别重要的意义。

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"See how raising the national minimum wage will benefit America's workers," the agency's web page proclaims.

“看看提高全国最低工资标准将如何让美国工人受益，”劳工部在其网站上表示。

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Moreover, for all their decline, America's unions still have something to offer, raising workers' pay overall (see chart) and narrowing the wage disadvantages suffered by women and minorities.

ECONOMIST: The unions