I would only be allowed to drink water every second day.

第二天，我们只被允许喝水。

youdao

The treatment lasts for 15 sessions, the first 5 all in a row and after that every second day.

治疗持续15次，开针的5次要每天都来，而后每隔一天一次。

youdao

'If you're a guy with fine hair and it tends to get flat and greasy though, shampoo it every second day,' he says.

他表示，“如果你头发较细，容易紧贴头皮并且还出油，那就每隔一天洗一次头发。”

youdao

There is one military aid on duty every second of every day including overnight.

所以每天每秒钟,包括整一个晚上,都有一个军事助理值班。

普林斯顿公开课 - 国际座谈会课程节选

And what you will give me in return is on the first day, one cent-- one penny; on the second day, two cents; third day, 4 cents... Every day, twice as much as the previous day, starting with one.

你们给我的是，第一天，一分钱;,第二天，二分钱，第三天，四分钱。,每天给我前一天的两倍钱，从一分钱开始。

哈佛公开课 - 幸福课课程节选

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