The challenge for mathematicians became how to classify the complete set of these simple groups.

数学家的挑战在于，如何对这些简单群的完整集合进行分类。

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The challenge is on how to complete the creation of the two accounts in the ERP and the CRM databases as a single distributed transaction.

难题在于以单个分布式事务怎样在ERP和CRM数据库中完成两个帐户的创建。

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Peter Kinloch, 28, had been determined to complete the 7 Summits Challenge, in which explorers climb the highest peak of each continent.

金洛克现年28岁，曾立志成为登上7大洲所有最高峰的探险者。

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Teams of up to five participants will have five days to complete the challenge.

FORBES: The Forbes Challenge

Runners must reach safe zones and keep tags on their belt, which represent lives, to complete the challenge.

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The first sailor to complete the challenge was Sir Chay Blyth, who circumnavigated the globe non-stop from east to west in 1971.

BBC: NEWS | UK | England | Devon | Bid for 'wrong way' global sail