They believe they're playing a zero-sum game, where both must compete for the same resources.

他们认为他们在玩一场零和游戏，双方必须争夺同样的资源。

《柯林斯英汉双解大词典》

This was no longer a zero-sum game.

这不再是一场零和博弈。

youdao

Science is not a zero-sum game.

科学并非零和游戏。

youdao

So,after taking into account the market impact, and the commissions,and the fees, this zero-sum game becomes a negative-sum game.

所以,考虑到市场冲击,佣金,规费,这一零和博弈变成了负和博弈

耶鲁公开课 - 金融市场课程节选

First of all, happiness is a positive sum game-- it's not a zero sum game.

首先，快乐是正和游戏-,不是零和游戏。

哈佛公开课 - 幸福课课程节选

We've already talked about how security selection is a zero-sum game.

我们已经讨论过,证券选择是个零和博弈

耶鲁公开课 - 金融市场课程节选

But currencies tend to be zero-sum games over time, and gold, arguably, is a lousy store of wealth.

FORBES: Gold Investing: An Owner's Manual

This is the lesson of our history: Our economy is not a zero-sum game.

FORBES: Obama's Delusion: Growth Fueled by Government Spending and Tax Breaks

Washington sees Social Security reform as a zero-sum gain-if someone gains, someone else loses.

FORBES: Fact and Comment