zhèng​wài​bù​xìng

positive externality

  1. zhèng adjectivenoun
    positive
    positive; plus; describes numbers greater than zero or positive electrical charges
  2. 外部 wài​bù nounadjective
    external
    outside a particular range or system, such as a company or environment; non-internal
  3. xìng affix
    [-ity]
    Suffix used after verbs or adjectives to form nouns expressing a state, quality, or scope, similar to English "-ity", "-ness", or "-ism".