你好！散发emission 英[iˈmɪʃn] 美[ɪˈmɪʃən] n. 排放，辐射; 排放物，散发物（尤指气体）; （书刊）发行，发布（通知） ; [例句]The emission of gases such as carbon dioxide should be stabilised at their present level二氧化碳等气体的排放应该稳定在当前水平。
