| 单词 | emission unit |
| 释义 | emission unit emission unit noun [C, usually pl.]
a right to send out a measured amount of harmful gases such as carbon dioxide into the air: The Kyoto Protocol permits trading of emission units between countries. ⇨ CARBON CREDIT
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Emission units
Under the Kyoto Protocol, countries are given a number of emission units equal to the maximum amount of harmful gases they are allowed to produce. Countries that produce a smaller amount than their limit can sell units to countries that produce more than their limit. Countries can also earn units, for example by planting trees or helping other countries to use technologies that use energy more efficiently.
All units are the same size and can be traded in the same way. But some people distinguish units that are earned from those that are given by calling them carboncredits or emissioncredits rather than emissionunits.
Emission credit is also used to describe the units of systems other than the Kyoto Protocol, for example the system in the US to reduce sulphur dioxide pollution.
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