Definition
To alter the established rules or requirements of a process or activity while someone is in the midst of trying to complete it, thereby creating additional difficulty for them.
在他人尝试完成某事时变更规则或条件，使其更加困难。
Just as I was about to finish the report, my supervisor moved the goalposts by suddenly changing the formatting requirements.
就在我即将完成报告时，我的主管突然更改了格式要求，改变了规则。
We were on the verge of an agreement, but they moved the goalposts by demanding extra clauses.
我们即将达成协议，但他们通过要求额外条款来改变了规则。
Every time I think I’m close to reaching the target, they move the goalposts, making things more complicated.
每当我以为自己快要达成目标时，他们就会改变规则，使事情变得更加复杂。