1. There are data on the rates of diffusion of molecules. 有一些关于分子的扩散速率的数据。
2. In December 1778, he proposed the plan "for the more general diffusion of knowledge". 1778年12月，他提出了“更普遍传播知识”的计划。
3. Iron came from West Asia, although its routes of diffusion were somewhat different than those of agriculture. 铁器来源于西亚，尽管它的传播路径跟农业技术的传播路径有些不同。
4. If technological diffusion and implementation develop faster, workers will have to constantly refresh their skills. 如果技术的传播和应用发展得更快，工人们将不得不持续更新他们的技能。
5. The diffusion of agriculture and later of iron was accompanied by a great movement of people who may have carried these innovations. 农业和之后铁器的普及，是伴随着可能传播这些创新的人们的一场运动而来的。
