通过将使用材料投入生产来减少浪费可以降低成本、减少采购花费：不从外部采购，更多从内部再利用。
Reducing waste by incorporating used materials into production can cut costs and decrease the price of procurement: less to be procured from the outside and more to be re-utilized from the inside.
汽车使用一加仑这种新植物燃料或一加仑汽油可以开得一样远；但是一加仑植物燃料不但花费少，并且造成的污染更少。
A car can be driven as far on a gallon of the new plant-based fuel as a car can be driven on a gallon of gasoline, but a gallon of the plant-based fuel both costs less and results in less pollution.
大多数处方药使用者并不担心花费太高。
Most users of prescription drugs don't worry about costs a lot.
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