play both ends against the middle

例句：

1. 1.The team played both ends against the middle to gain an advantage.
   球队采取了两头对抗中间的策略来获得优势。
2. 2.The company's strategy was to play both ends against the middle to win the market share.
   该公司的战略是采取两头对抗中间的策略来赢得市场份额。
3. 3. The teacher explained that playing both ends against the middle is a good way to improve one's performance.
   老师解释说，两头对抗中间是一种提高表现的好方法。