Diffusion mixes things very well, but as the size gets bigger, diffusion becomes very slow.

扩散作用使物质充分混合,但随着细胞变大后,扩散作用就捉襟见肘了

耶鲁公开课 - 生物医学工程探索课程节选

The length after a week, increased in their fingers.

一周后，他们的手指变长。

哈佛公开课 - 幸福课课程节选

After the accident he lost all of that.

而经历了那场事故后,他完全变了

耶鲁公开课 - 心理学导论课程节选