labour input的用法和樣例：
例句
- The modifications were aimed chiefly at reducing labour costs and increasing yields.
改變的目的主要在於減少勞力成本和增加果實產量。 - In a currency union, with devaluation ruled out, there are only two ways of reducing unit labour costs relative to those of other members.
除了貨幣貶值以外，在貨幣聯盟里減少本國對其他成員國的單位勞力成本的方法只有兩種。
