a whole new ball game
完全不同的情况或局势
口语·形容情况发生根本变化
英文释义
a completely different situation or set of circumstances, often more challenging or complex than before
例句
After the merger, the company faced a whole new ball game with different rules and competitors.
典故来源
源自棒球运动，指更换比赛用球后，投球和击球的特性改变，引申为情况完全不同。