[ C ] in British politics, a written order that party members must be present in parliament when the

中文解释

（英国政界的）投票书面通知（通知该党其他党员出席议会并按规定投票） In 1970 he defied a three-line (= the most urgent) whip against EC membership. 1970年，他公然违抗反对加入欧共体的紧急投票通知。