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"。