So, you know - but that's a rearguard action.

所以，你知——是后卫行动。

Next came the musicians and a rearguard of capering fakirs, whose cries sometimes drowned the noise of the instruments;these closed the procession.

接着是乐队和一支狂热的信徒组成的大军。他们叫喊的声，有时甚至掩盖了震耳欲聋的乐器声，游行队伍至此才算结束。

Publishing is already fighting a rearguard action against the 1997 cancellation of the net book agreement (NBA)and the more recent dominance of Amazon.

出版业已经在与1997网上书籍协议（NBA）以及最近亚马逊的主导地位进行一场后卫行动的斗争。