BERLIN, July 6 (Xinhua) -- Thomas Muller's storied Bayern Munich career appeared to reach its quiet end at the FIFA Club World Cup, with the veteran forward choosing to sidestep farewell fanfare in ...

BERLIN, July 6 (Xinhua) -- Bayern Munich's Jamal Musiala faces a lengthy spell on the sidelines after suffering a serious ankle injury during his side's 2-0 FIFA Club World Cup quarterfinal defeat to ...

When the best part of Christmas is playing Santa Claus and helping poor, elderly and lonely people. Take Away English talks ...

摘要量子物理中，利用微扰展开计算物理量得到的通常是发散的渐近级数，这意味着这些物理量往往有不可忽略的非微扰贡献。博雷尔求和提供了将发散级数进行合理求和的方法，而在此基础上发展起来的复现理论是一种从微扰级数本身出发就可以提取出非微扰贡献的强大理论工具。