externalities的例句（externalities在句子中的用法）

• As we saw earlier, the market mechanism breaks down when public goods or externalities are present. 正如前文所述,当出现公共商品或外在化商品时, 市场机制就会失去效用.
• The third involves the undesirable externalities that may accompany productivity increases. 第三是伴随生产率提高而产生的不良的外部影响问题.
• Furthermore, externalities are also present. 而且, 也出现了外在化问题.