Four days later, American Navy forces killed three of the hijackers and rescued the captain,Richard Phillips.

VOA: special.2009.04.25

At some point, maybe a week later, four to eight days later, you would start to see antibody levels rise.

之后,或许一周之后,四天到八天之间,就可以看到抗体的浓度开始上升

耶鲁公开课 - 生物医学工程探索课程节选

He was dressed in rags. He died four days later in a hospital.

VOA: special.2009.02.02

Four days later, the World Health Organization declared it a worldwide health threat.

VOA: special.2010.05.18

Four days later, Senator William Seward of New York rose to speak.

VOA: special.2009.04.02

Four days later, baseball had another rare event.

VOA: special.2009.08.01

Four days later,U.S.Navy snipers killed three of the hijackers and rescued the captain, Richard Phillips.

VOA: standard.2009.04.22