impede 的意思是阻碍、防止。  

British lawmakers have approved a measure to impede any attempt by the new pro-Brexit leader to take the country out of the European Union without a divorce deal. 英国议员们批准了一项措施，阻止支持英国脱欧的新领导人试图在没有脱欧协议的情况下将英国从欧盟撤出。