扩散: spread; diffuse; proliferate; scatter about; irradiation; diffusion 短语和例子扩散光 diffuse light; 癌扩散 proliferation of cancer; spread of cancer; 病菌扩散 proliferation of germs; 核扩散 nuclear prolifer
出口: 1.(说出话来)speak;utter:如果你认为那不公平, 为什么不说出口? if you thought that wasn't fair, why didn't you speak up?2.(出口处) exit; exitus; way out 短语和例子会场出口 the exits of a conference hall3.(本国或本地区的货物运出去; 输出)