Remember that these cells are relatively large compared to bacteria and so diffusion doesn't occur very quickly over this length scale.

要知道这些细胞相对细菌而言,还是比较大的,扩散作用在这种尺度上,发生得不是那么快

耶鲁公开课 - 生物医学工程探索课程节选

In general, inside of a cell molecules move by a process called diffusion.

总的来说,细胞内的分子通过扩散作用来移动

耶鲁公开课 - 生物医学工程探索课程节选

If there's a group, responsibility to help decreases and this is captured in different ways but the main idea is we all think someone else will help so we don't. There's a diffusion.

如果是一群人，帮助的责任就会分散变小,这体现在多个方面,但最主要的想法就是我们都认为别人会帮助,所以我们就不帮助了，责任被分散了。

耶鲁公开课 - 心理学导论课程节选

Because of the physics of diffusion it doesn't go linearly with distance.

由于扩散现象的物理特性,它和距离不是线性相关的

耶鲁公开课 - 生物医学工程探索课程节选

These details aren't important, it is described in your book, but the thing that is important to know is that diffusion occurs fast over short distances, but because of the physics of diffusion it occurs slowly over longer distances.

这些具体细节无关轻重,书上都有,重点是你要明白,距离越短扩散越快,由于扩散现象的物理特性,距离越长扩散越慢

耶鲁公开课 - 生物医学工程探索课程节选