Amaya was deep in thought when her mom said it was time to go shopping.

当妈妈说该去购物时，阿玛亚陷入了沉思。

youdao

Alice had been so deep in thought that she had walked past her car without even seeing it.

爱丽斯陷入深深的思考之中，连经过自己的车都没看到。

《柯林斯英汉双解大词典》

They now walked on in silence; each of them deep in thought.

他们俩默不作声地往前走，各人在想各人的心思。

youdao

After he left, our room seemed to be swirling with fresh air, and Father was deep in thought the entire day, looking intently at the newspaper.

NPR: Literature and Lullabies from the 'Axis of Evil'

Barnes raised the field glasses up, lowered them, pursed his lips as if in deep thought, and then said, in a newly formed sarcastic voice, Hell, you missed the whole thing, Lee.

NEWYORKER: The Tree Line, Kansas, 1934

Advanced technologies have made it possible to not just extract more oil from conventional sources previously thought tapped, but frack and deep-water drill in spots not even thought of 20 years ago.

FORBES: America's (Un)Peak Oil