For four days the town suffered continuous attacks.

那座城市连续四天遭到了袭击。

《牛津词典》

She hasn't been seen for four days and there is concern for her safety.

她已四天不见踪影，大家对她的安全很担心。

《牛津词典》

They housed eight adult rats with two types of robotic rat—one social and one asocial—for four days.

他们将8只成年老鼠和2种机器老鼠（一种是社会性的，一种是非社会性的）一起饲养了4天。

youdao

For four days, the wounded lay on the battlefield crying for help,for water.

VOA: special.2009.11.26

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

What you'll do is every day for the next 30 days give me one cent, next day two, four, eight and so on.

你们要做的是在未来30天给我一分钱，第二天二分，然后是四分，八分，以此类推。

哈佛公开课 - 幸福课课程节选

The company is also to shut the factory for four days between 26 and 29 May.

BBC: Wrigley cuts back gum production

The graphite caught fire and burned for four days, releasing large amounts of contaminated particulates.

FORBES: Media Hype Over Nuclear Energy Increases Anxiety And Confusion

Under cost-cutting proposals, firefighters could be at their station for four days on the run.

BBC: Devon and Somerset firefighters threaten legal action