For the short-period supply price is the sum of the marginal factor cost and the marginal user cost.

对于短期供应格是素成本和用户成本之和。

Economists are normally loth to tamper with prices, the most basic element of any market. But little about this pandemic has been normal.

经济学家通常不愿干预格，而格是任何市场的最基本素。但是关于这次大流行的情况大不正常。

But no matter their size, many of these companies use the same key ingredients to find and keep customers, price point, convenience, and variety.

但无论规模大小，许多这些公司使用相同的关键素来寻找和留住客户，格点，便利性和多样性。

Now in the modern theory of value it has been a usual practice to equate the short-period supply price to the marginal factor cost alone.

现在，在现代值理论中，通常的做法是将短期供应格单独等同于素成本。