是supply
n. 供给，补给供应品
vt. 供给，提供补充
vi. 供给替代Demand is outstripping supply.
需求快超过供给了。
There is an abundant supply of cheap labour.
有丰富的廉价劳动力供应。
Prices change according to supply and demand.
价格根据供应量和需求量而变化。
The electricity supply here is quite erratic.
这里的电力供应相当不稳定。
Food is in short supply all over the country.
食品在全国各地都供应不足。
