The fragility of Britain’s economic recovery was underscored by the biggest monthly fall since April 2001 of an index of activity in the service sector, which accounts for three-quarters of GDP.

英国脆弱的经济复苏变得更加举步维艰，上月英国的服务业商业活性指数的下跌幅度是自2001年四月以来最大的。 这占到了整个GDP的四分之三。

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The index is the government's chief gauge of future economic activity.

这个指数是政府对未来经济活动的主要判断标准。

《柯林斯英汉双解大词典》

The purchasing managers' index, a closely-watched gauge of activity, rose in May to its highest since October.

经理购买指数，监测经济活动的重要指标，五月份上涨到去年十月以来的最高值。

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An index of activity in both manufacturing and services edged up in January from a record low.

ECONOMIST: Overview

The Philly Fed index of activity was predicted to rise in June from 3.9 but came in at minus 7.7.

FORBES: Euro-Cash Pressures Trip-up Nearby Eurodollar Futures

The Institute for Supply Management said Monday that its index of factory activity slipped to 51.3 percent.

NPR: Survey: US Manufacturing Grew More Slowly In March