那座城市连续四天遭到了袭击。

For four days the town suffered continuous attacks.

《牛津词典》

他在受讯问四天之后招认了。

He confessed after four days under interrogation.

《牛津词典》

这艘船在港口停泊了四天。

The ship spent four days in port.

《牛津词典》

And these investigators claimed this is because they had been exposed to French in the first four days of their lives.

这些研究者宣称,这是因为他们在出生的头四天里,暴露在了法语环境中

耶鲁公开课 - 心理学导论课程节选

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

For four days, the three of them fed on the body and blood of the cabin boy.

整整四天，他们三个,靠派克的尸体和血液为食。

耶鲁公开课 - 公正课程节选