隔日的英文：
on alternate days

参考例句：

Its launch issue was sold out the day after it hit the streets.
创刊号在出版隔日就售罄。

Tom and Harry do the work on alternate days.
汤姆和哈里隔日轮流做这工作。

alternate是什么意思：
adj. 轮流的，交替的，间隔的
n. 候补者；替换物
v. （使）交替，轮流

Are there alternatives to prison?
除了监禁还有其他办法吗？

should alternately present as undulate .
激情平淡应呈波浪形交替出现。

There are two reasonable alternatives.
有两个合理的替代方案。

There appears to be no alternative to the increase of price .
除了提高物价没有别的选择。

You have the alternative of marrying or remaining a bachelor.
你可以结婚也可以仍做单身汉，任你选择。

days是什么意思：
n. 一天；白昼，白天；工作日；时代，时期

Things go on day by day.
事情逐日进行着。

Day by day the situation is improving.
情况在一天天地好转。

Like this, day after day.
就这样，日复一日。

It was a fateful day.
那是个不祥的日子。

Meantime, from day to day they endure.
同时，一天天他们捱了下去。