We must strengthen our unity in the face of powerful enemies.

大敌当前， 我们必须加强团结。

He had powerful enemies who engineered his ruin.

他策划使他的强敌覆灭。

He has many powerful enemies, including in royal circles.

他信有包括皇家在内的许多强势敌人。

He had powerful enemies who engineered his downfall.

他的敌人势力强大，他们策划了他的下台。

Harry was such a brave and clever boy that he dared to fight against powerful enemies.

哈利是非常勇敢和聪明的男孩，他敢于和强大的敌人做斗争。