531, 000 offered by the Clay Mathematics Institute in Cambridge, Massachusetts, for solving one of the world's seven "Millennium Problems".

这个位于马萨诸塞州剑桥的数学研究所悬赏了七个“千禧难题”，佩雷尔曼破解了其中之一。

youdao

The Clay Mathematics Institute in Cambridge, MA, has named "P versus NP" as one of its "Millennium" problems, and offers $1 million to anyone who provides a verified proof.

麻省的剑桥克莱数学研究院（Clay Mathematics Institute）将“P 与 NP”列为其“千年（Millennium）”问题之一，并为任何作出有效证明的人提供 1 百万美元的奖金。

youdao

The development is the latest Millennium Commission-funded project to be surrounded in controversy, following the financial woes of the Dome and the structural problems of the Millennium Bridge, which was designed by Lord Foster, the architect of the British Museum's new glass roof.

BBC: British Museum opens to controversy

Mr Guenier said Taskforce 2000, which was set up by the last Tory government, also feared international banks might suffer from problems associated with the millennium bug.

BBC: Publicity campaign 'trivialises' Y2K

Whether anyone can fulfill the dreams of African solutions to African problems is Kenya's challenge in the next millennium.

CNN: Kenyans, independent, still seek some freedoms