Houston, the largest city in Texas, is home to America's biggest energy firms, which have spawned an active cluster of energy traders and hedge funds.

得克萨斯州的第一大城市休斯敦是美国最大的能源公司的总部，它为一群活跃的能源交易公司和对冲基金的出现提供了平台。

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The results indicate the cluster will keep growing into a modern city of galaxies.

结果表明星团将不断成长为一个现代的星系团。

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And, at least three cluster munitions exploded over the city of Misrata.

至少有三枚集束弹在米苏拉塔市爆炸。

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The distinctive feature of the City cluster is the pre-eminence of foreign financial firms.

ECONOMIST: London as a financial centre

Make no mistake - the appointment of Joanna Shields as the new boss of London's Tech City cluster is a big coup for No 10.

BBC: Tech City gets top boss

The City's cluster of financial expertise, then, should keep it ahead of Frankfurt, the site of the new European central bank and the place most often touted as a rival to London.

ECONOMIST: Europe��s monetary union