Several years later, he listed the term as a trademark with the United States government.

VOA: special.2010.03.28

And several years later these two graduate students at Leiden by the name of Goudsmit and Uhlenbeck proposed that the electron in fact spins.

几年之后,两个莱顿的学生,古德米斯特和乌伦贝克,提出电子其实是在自旋的。

麻省理工公开课 - 固态化学导论课程节选

Several years later, he wrote a book called "The Coming Race War in America."

VOA: special.2009.11.01

Several years later, Mister Harrison built a second clock.

VOA: special.2010.07.14

He searched again for it several years later.

VOA: special.2010.07.11