It goes - going through this process of amplifying divisions, every division increasing the number of cells by a factor of two and these cells becoming more differentiated around the way.

它经历了一系列扩增性的分裂过程,每次分化,细胞数目都翻一番,而在此过程中细胞分化得更成熟

耶鲁公开课 - 生物医学工程探索课程节选

One sleep researcher joked that these two are connected because what happens is dreams fly around through the ether and then their erections serve as antennas so you pick them up.

有研究人员开过玩笑说，这两者是有联系的,因为梦境从上空飞过,他们的勃起就像天线一样,把梦境接收进你大脑。

耶鲁公开课 - 心理学导论课程节选