谁知道呢：如果谈判迫使欧盟修改其自身的劳动力自由移动承诺，那么英国脱欧将不再仅仅是英国从欧洲退出，而更像是欧盟资格条件的大修。
And who knows: if the negotiations force the EU to re-cast its own commitment to free labor movement, Brexit may turn out to be a matter less of British exit than of an overhaul of the terms of European membership.