警察拘留了嫌疑人。

Jǐngchá jūliúle xiányírén.

The police detained the suspect.

拘留所设有监控设备。

Jūliúsuo shè yǒu jiānkòng shèbèi.

The detention center is equipped with surveillance devices.

涉嫌犯罪者被拘留。

Shèxián fànzuì zhě bèi jūliú.

Suspected criminals have been detained.