n.排放，辐射；排放物，散发物（尤指气体）；（书刊）发行，发布（通知）； 变形： 复数：emissions 英英释义： emission[ i'miʃən ]n.the act of emitting; causing to flow forth同义词：emanationa substance that is emitted or released同义词：dischargethe release of electrons from parent atomsany of several bodily pro