zero rest mass

例句：

1. 1. The zero sum game means that the total amount of money won or lost is equal.
   零和游戏意味着赢得或失去的总金额是相等的。
2. 2.The zero-sum game between nations is a constant struggle for power and influence.
   国家之间的零和游戏是一场持续的权力和影响力的斗争。
3. 3. In economics, the concept of zero-sum games refers to situations where the gains from one person's actions are exactly offset by the losses from another person's actions.
   在经济学中，零和游戏的概念指的是一个人的行动所带来的收益正好被另一个人的行动所带来的损失所抵消的情况。