Variable costs change with the amount produced.

可变成本随生产数量的变化而变化。

Economists point out that there's two types of costs: there's variable costs and fixed costs.

经济学家指明，成本有两种：可变成本和固定成本。

Now, together fixed costs and variable costs make up the total cost for a specific number of pizzas.

固定成本和可变成本构成了特定数量披萨的总成本。

Usually, your fixed costs are higher and we cant do much about that, but we can usually trim your variable costs such as entertainment or clothing.

通常，你们的固定花费会比较高，关于这部分我们能做的不多，但是通常我们可以削减掉你们的可变性消费，例如娱乐，或者衣物。