哪位大神帮忙翻译一句话呗.
问题描述：
哪位大神帮忙翻译一句话呗.
它们之间的关系常在一瞬间发生变化——化敌为友或势不两立：为敌时绞尽脑汁,互不相让；为友时,亲如兄弟,谁也不记仇.
答
their relationship changed immediately——they turned from friends to enimies.They were as close as brothers when they were friends; they are fighting against each other when they become enimies.