such an outcome,if it happens,could cause a political controversy;or it could lead to more power being transferred to the eu in the worst possible circumstances,namely when the union is deeply unpopular.
参考答案:
要点：这是一个复合句，条件从句很短，所以置于主谓之间，造成句子，翻译时应将从句提到句首。"namely when the union is deeply unpopular"是一个状语从句，用来解释"the worst possible circumstances"。
译文：这种情况一旦发生，就可能引起政治上的争吵；即使在最糟糕的情况下即在欧盟很不得人心的情况下，也可能使更多的权利转移到自己手中。
