밑줄 친 우리말 문장을 영어로 가장 적절하게 옮긴 것은? Goods for which the marginal costs are close to zero are inherently public goods and should be made publicly available. Bridges and roads are good examples. Once society has incurred the capital costs of constructing a bridge or road, maximum benefit from the initial investment is gained only if use is not restricted by charging. 따라서 사람들은 무료로 그러한 시설들을 이용할 수 있어야 한다.