externalities造句
Furthermore,
externalities are also present.
而且, 也出现了外在化问题.
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.
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.