In March of eighteen eighty-nine, Grover Cleveland left the White House after four years as president.

VOA: special.2010.06.17

Plato was born in 427, which is four years after the commencement of the Peloponnesian War.

柏拉图生于公元前，427，年，即伯罗奔尼萨战争,开始之后的四年。

耶鲁公开课 - 政治哲学导论课程节选

And a twenty-four-year-old Milton, after seven years of education, simply decides not to go. Instead of joining the ministry, Milton instead returns home and he stays at home without any means of supporting himself for six years.

而24岁的弥尔顿，在结束了7年的学业之后，却决定不那么做,他反而是回到了家中,在家里呆了6年。

耶鲁公开课 - 弥尔顿课程节选

He withdrew after four years, following the deaths of his wife and mother.

VOA: special.2010.08.05

This urban setting has been pointed out by anonymous tipsters, who have come forward after 25 years, as the suspected final resting place of at least four people who disappeared during the civil war that raged in Guatemala during the 1980s.

VOA: standard.2009.12.18

Though the dig,along a paved highway that was constructed in recent years complicating the work of the anthropologists had yet to yield any results after four days,Elena and the dozen or so family members of presumed victims thought to be buried here have refused to give up hope.

VOA: standard.2009.12.18