Firms in perfect competition are price takers: they don't particularly have to worry about the actions of their competitors.

这些企业是价格接受者,他们不必担心,他们的竞争对手的策略

耶鲁公开课 - 博弈论课程节选

They're not price takers but they take the demand curve.

他们不是价格接受者,但面对需求曲线

耶鲁公开课 - 博弈论课程节选