More than 80 countries and 121 u. S. cities belong to a reporting system to track flu.

全球八十几个国家和美国一百二十一个城市都加入追踪流感动向的通报体系。

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According to Ghemawat, about 90% of U. s. multinationals operate in fewer than 20 countries, and even in countries where they do have a presence, they may be in only one or two key cities.

格玛沃特表示，大约90%的美国跨国公司运营覆盖不足20个国家，即便是在有业务运营的国家，可能也只是在一、两个重要城市。

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