In American English, you have upset the applecart if you ruin someone's plans or go against the usual way of doing things.

在美语里，如果你毁了别人的计划或者不遵循常规的做法，你就是" 打乱安排" 。

There's nothing like putting the nervous players in first; it's the sitting with their pads on that upsets their applecart; that was another of my reasons for being so confoundedly close.

没有什么比让紧张的玩家先上场更好的了； 是坐在垫子上打乱了他们的苹果车； 这是我如此亲密的另一个原因。