Still,the chief economist of the International Monetary Fund says the effects of the world economic crisis will hurt both supply and demand for years to come.

VOA: special.2009.08.21

Now, the interest rate in Irving Fisher's world has to equate supply and demand in the market for debt.

在费雪的理论里,利率必须与,债券市场的供需关系保持平衡

耶鲁公开课 - 金融市场课程节选

But falling demand, including reduced demand for oil, has cut trade around the world.

VOA: special.2009.01.16

While demand for renewable energy is growing, those supplies currently meet just seven percent of world energy needs.

VOA: standard.2010.04.21

The International Air Transport Association, which represents 230 airlines around the world, predicts passenger demand will grow nearly 6 percent in 2010, while cargo demand is expected to see double digit growth.

VOA: standard.2010.03.30

Several medical industry analysts say Asia's rising economic strength and increasing investment in health services will be able to meet demand for affordable care both for people in the region and for world travelers.

VOA: standard.2009.12.23

In the report, called "Heads in the Sand", the group says a serious decline in the supply of oil coupled with increasing demand and few new projects planned, means the world needs to move away from oil.

VOA: standard.2009.10.20