As days went by, they had no news of their mother.

时间一天天地过去了，他们仍然没有他们妈妈的消息。

youdao

As days went by, it gradually grew slow in action.

日子一天天过去，它逐渐变得行动迟缓。形容词。

youdao

This did not happen instantly, of course, but as the days and months went by and news of reactions to the award came over the airwaves, I began to understand the significance of the Nobel Prize.

当然这并不是突然发生的，而是花了几天，几个月，当各方对获奖的反应的新闻通过电波传到我这里时，我才开始理解诺贝尔奖的意义。

youdao

As the days went by, other explanations occurred to him, but he kept coming back to the idea that his work had been plagiarized.

NEWYORKER: ?lvaro Rousselot��s Journey

Mr Prendergast said the kidnappers had realised they had taken the wrong man and began to treat him slightly better as the days went by.

BBC: NEWS | UK | Scotland | Glasgow and West | Motive mystery in abduction case

As the days went by, the combination of workout and diet left me both charley-horsed and starving, longing for the satiation that only sugar and grease provide.

CNN: Healthy habits: A month of living perfectly