Campaigners have hailed(欢呼，称赞) Andy Burnham’s pledge(承诺，保证) to bring an end to(结束，终止) indefinite jail terms as “a day that thousands of families have spent years fighting for(花费多年争取)”.
活动人士称赞安德鲁·伯纳姆废除无限期监禁刑期的承诺，称这是“数千个家庭多年来为之奋斗的一天”。
The prime minister has said he will “end the injustice(不公正，不义)” of imprisonment for public protection (IPP) sentences during this parliament(议会，国会), meaning people will no longer be trapped(被困住，陷入) indefinitely under a sentence abolished(废除，废止) more than a decade ago.
首相表示，他将在本届议会期间“终结”公共保护监禁（IPP）刑期的“不公”，这意味着人们将不再因一项十多年前就已废除的刑罚而无限期地身陷囹圄。
The IPP sentence was a form of indeterminate(不确定的，模糊的) sentence in which offenders were given a minimum jail tariff(刑期，关税) but no maximum for a range of(一系列，各种) crimes.
IPP刑期是一种不确定刑期，罪犯被给予最低监禁期限，但没有最高期限，适用于一系列罪行。