这一过程绝非轻而易举，因为欧盟谈判代表担心如果自己开出退出条款太过慷慨，其他成员国可能会纷纷仿效英国退盟。
The process has not been easy, because EU negotiators are worried that if the exit terms are too generous, other member states might follow the UK out of the bloc.