The sources and sinks of present main green house gases, which are CO2, CH4, N2O, HFCs, PFCs, SF6 are explicated.是什么意思_The sources and sinks of present main green house gases, which are CO2, CH4, N2O, HFCs, PFCs, SF6 are explicated.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句