Instead of sleeping, David picks up his book and reads deep into the night.

大卫没有睡觉，而是拿起书读到深夜。

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He went on studying deep into the night.

他一直学习到深夜。

《新英汉大辞典》

The boy read deep into the night.

这男孩读书一直到深夜。

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The Blue Jays and Padres weren't alone playing deep into the night, though.

NPR: Richard, Guzman Lift Padres To 17-Inning Victory

The 56-year-old finance minister is known to enjoy drinking liquor and smoking cigars with friends deep into the night.

CNN: Taking the Heat

Deep into the night, ESPN would go to San Francisco and there was Bonds, driving another ball into the bay.

NPR: Barry and the Babe: Incomparable Performances