An easy explanation for this reversal is that Mr Cameron has been lucky: he happened to be in charge when the circumstances were propitious for a Tory revival.
对这次的逆转一个简单的解释就是卡梅隆很幸运：在托利党天时地利逢复兴的时候碰巧是他在领导。
2
But for now, in a marvelous one-of-a-kind reversal of roles, I’m the one in charge.
但现在，角色恰好颠倒过来，我是这方面的负责人。
3
Both charge inversion and flow reversal can't be accounted for in continuum theory.