effective need的用法和樣例：
例句
- The development of high-tech industries is faced with some problems, such as relatively insufficient effective demand.
高新技術(shù)產(chǎn)業(yè)的發(fā)展也面臨著(zhù)一些問(wèn)題，特別是有效需求相對不足的問(wèn)題。 - For this reason a proportion of any increase in effective demand is likely to be absorbed in satisfying the upward tendency of the wage-u nit.
因此，有效需求任何增加的一部分就有可能被為滿(mǎn)足工資單位的向上趨勢所吸收。
