n.扩散；散布；传播；漫散
Diffusion is an exergonic process. 扩散是释放能量的过程。
The diffusion process seems to be accelerating. 传播过程看来正在加速。
This diffusion of knowledge accelerated dramatically in recent decades. 近几十年来，知识的传播速度大大加快。
Clouds cause the diffusion of light from the sun. 云使阳光漫射。
