He confessed after four days under interrogation.

他在受讯问四天之后招认了。

《牛津词典》

Under interrogation, he revealed all.

在审讯之下，他招供了一切。

youdao

In those under interrogation it can lead to confession.

在那些被审讯的人身上则迫使其招供。

youdao

The memos were graphic and troubling. The four documents - issued under the Bush administration - revealed details of interrogation techniques like simulated drowning that have been condemned around the world.

VOA: standard.2009.04.20

The very first thing we see, for example, is an open mouth, belonging to a man under interrogation.

NEWYORKER: Better Times

He says employees under interrogation can say the questions are irrelevant to the way they are performing and intrude too much into their private life.

BBC: NEWS | UK | Magazine | The boss and my business

Labor leader Mochtar Pakpahan has been detained and is under interrogation.

CNN: HARD CHOICES