In the absence of a great alternative arrangements, no backstop is no deal.

如果没有其他更好的安排，没有后盾计划就意味着无协议脱欧。

They included reaffirming the EU's determination to work speedily to establish by the 31st of December 2020 alternative arrangements so that the backstop will not need to be triggered.

其中包括重申了欧盟决议，在2020年12月31日之前快速、努力地建立起替代工作安排，这样就不需要启动保障协议了。