七月，一项密切关注制造、服务行业采购经理的调查指数暴跌至2001年以来的最低点。
A closely watched survey of purchasing managers in manufacturing and services slumped in July to its lowest level since 2001.
攻击者也可以根据指数只在内部dtd子集中有规律地建立实体引用，这样，就会使小的输入文档制造出大量的文本。
An attacker could also exponentially build up entity references purely in the internal DTD subset so that a small input document produces a large quantity of text.
人民币币值可能仍然被低估，但是我们的指数表明，与5年前相比，美国的制造商不应该那么担心中国的竞争了。
The yuan may well still be undervalued but our index suggests American manufacturing should have less to fear from Chinese competition than it did five years ago.
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