单语范例（未经PONS编辑处理）
Methane has a global warming potential 21 times that of carbon dioxide.
en.wikipedia.org They found that at diameters of 24 in, ductile iron pipe had the highest global warming potential based on emissions from manufacturing, transportation and installation.
en.wikipedia.org Considered over a 100-year period, it has 298 times more impact per unit mass (global warming potential) than carbon dioxide.
en.wikipedia.org Methane gas has twenty times the global warming potential of carbon dioxide.
en.wikipedia.org They include: global warming potential, photo oxidant formation potential, eutrophication potential, human toxicity potential, freshwater ecotoxicity potential, marine ecotoxicity potential and terrestrial ecotoxicity potential.
en.wikipedia.org