We worked well into the small hours.

我们一直工作到了午夜之后。

《牛津词典》

They were arrested in the small hours of Saturday morning.

他们在周六凌晨时分被捕。

《柯林斯英汉双解大词典》

He was so engrossed in his work that he frequently stayed up until the small hours.

他全神贯注地工作，经常工作到下半夜。

《新英汉大辞典》

Experts say accountability is key in determining the future use of certain practices such as confining thousands of protesters into small areas for hours on end and of some officers removing badge numbers from their uniforms in crowd control situations.

VOA: standard.2009.04.21

There are plenty of reasons why lights burn in Manhattan skyscrapers into the small hours.

ECONOMIST: Investment banking

The team started assembling the craft in the small hours of the morning, to much media anticipation.

ENGADGET: The Highs and Lows of Human-Powered Flight Alt

When Gladstone spent the small hours declaiming endlessly to its members (and even listening to their replies)?

ECONOMIST: The golden age of the Commons