挟天子以令诸候: have a firm hold over the emperor to oppress the princes; control [overawe] the emperor and command the nobles; have the emperor in one's power and order the dukes about in his name
却: Ⅰ动词1.(后退) step back 短语和例子退却 go back; retreat2.(使退却) drive back; repulse 短语和例子却敌 repulse the enemy3.(推辞; 拒绝) decline; refuse; reject 短语和例子推却 decline; refuse; 盛情难却。 it would be ungracious no