n.擴散；散布；傳播；漫散
Diffusion is an exergonic process. 擴散是釋放能量的過程。
The diffusion process seems to be accelerating. 傳播過程看來正在加速。
This diffusion of knowledge accelerated dramatically in recent decades. 近幾十年來，知識的傳播速度大大加快。
Clouds cause the diffusion of light from the sun. 云使陽光漫射。
