The bacterium doesn't have a nucleus, and in fact, they don't have very well formed organelles in general.

细菌没有细胞核,实际上,细菌没有完善的细胞器

耶鲁公开课 - 生物医学工程探索课程节选

But at the time, they didn't have a well-formed name for it, they were just saying OK, there's this fourth quantum number, there's this intrinsic property in the electron.

但在那时，人们没有给它取名，他们只是说ｏｋ，这是第四个量子数，这是电子的本征性质，　

麻省理工公开课 - 化学原理课程节选

The nucleotide has a directionality, there's an up and a down to it and it's going to turn out the chain that's formed by polymerizing these has a directionality as well and that's important in defining the structure.

核苷酸有方向性,有上端和下端,核苷酸长链,是由核苷酸沿一个特定方向聚合而成的,这在定义结构时很重要

耶鲁公开课 - 生物医学工程探索课程节选

And as Walt Whitman wrote in poem after poem, and other poets did as well, and politicians said over and over and over and over America, and this United States, this nation formed there would be the beginning of a new man, a new start for humankind.

对此沃尔特·惠特曼和其他诗人,写下了众多的诗篇,政治家们也对此喋喋不休,这片土地上,在美利坚合众国,人们可以获得新生,这也是,人类的新起点

耶鲁公开课 - 美国内战与重建课程节选