A traditional approach is to isolate a variable that is believed to solely influence either supply or demand.

传统的方法是将一个被认为是只影响需求或供应的变量孤立出来。

youdao

By quickly storing and delivering charge, batteries could accommodate fluctuations in supply and demand, and help to incorporate variable sources of power such as wind and solar.

通过快速的存储和高效率的充电模式，电池可以很快的调节供应和需求之间的平衡，同时又可以吸收其他多变的能源，例如风能和太阳能。

youdao

The work is repetitive, and the workers are regarded as a variable cost to be taken on or laid off as demand dictates.

这一工作是重复性的，并且工人被视为成本变量，根据需要增加或裁减。

youdao

Using price to manage demand is a well-studied discipline in the airline and railway industries, where individual seats may be priced differently to manage variable demand into fixed capacity.

ECONOMIST: Excessive

Issuers want to avoid offering variable-rate demand obligations because they fear that if rates rise or their creditworthiness declines, they may not be able to roll over short-term borrowings.

FORBES: Move Over Treasuries, Muni Bonds Are The New Bellwether

To keep borrowing costs from exploding, municipal borrowers sought big bank letters of credit as backstop guarantees on the shorter than they wanted variable-rate demand obligations they turned to.

FORBES: Muni Bond Default Concerns Are Real