demand and supply的用法和樣例：
例句
- We thus discuss a new dynamistic price strategy believed to be a nice way to match the supply and demand of such products.
動態價格策略是匹配需求與供給的一種可行手段，正確地制定和使用價格策略可以增加產品的收益。 - The contradiction between military demand and military supply is a basic contradiction in military and economic development.
軍事需求與供給之間的矛盾，是軍事與經濟相驅發展的基本矛盾狀態。
