three-line whip

劍橋詞典

In the UK a three-line whip is an instruction given to Members of Parliament by the leaders of their party telling them they must vote in the way that the party wants them to on a particular subject .
（政黨領(lǐng)袖要求該黨議員按照黨的要求投票的）緊急指令 返回 three-line whip