A car is just some metal, plastic, rubber.

汽车就是铁，塑胶，还有橡胶组成的。

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Companies did produce agreements to restrict, for example, the production of paper and the production of rubber, and the production of steel, and the production of iron, and the production of railway lines, actually, even quite complicated things.

公司之间的签署了限制产量的协议,比如说有造纸业,橡胶制造业,炼钢业,冶铁业,铁路运输行业,当然还有更复杂的行业

耶鲁公开课 - 博弈论课程节选