zero Bessel function

例句：

1. 1. The zero sum game means that the total amount of money cannot be increased or decreased.
   零和游戏意味着总金额不能增加或减少。
2. 2. The zero-sum game is a metaphor for competition where success depends on outsmarting your opponent.
   零和游戏是一个比喻，指的是竞争，成功取决于胜过对手。
3. 3. In the zero-sum game, every gain comes at the expense of another.
   在零和游戏中，每一次的增益都以另一种方式损失。