To move the goalposts means to change the rules, conditions, or objectives in a way that makes them more difficult to reach the goal.
Move the goalposts意思是改變規(guī)則、條件或目標(biāo)，使它們更難達到目標(biāo)。
Imagine a soccer game where the players were trying to score a goal, but someone kept moving the goal side to side, or further away -that would certainly make it a lot harder to get the ball in the goal
想象一下，一場足球比賽中，球員們試圖進球，但有人不停地把球門從一邊移到另一邊，或者移得更遠——這肯定會讓進球變得更加困難。
We'd almost signed the contract when the other guys moved the goalposts and said they wanted more money.
我們幾乎就要簽合同了，可就在這時對方那些家伙又出了難題，說他們得加價。