供称

zhèng ren gòng chēng fàn zuì shí tā zài chǎng

证人供称犯罪时他在场。

The witness gave testimony that he was present when the crime was committed.

rú guǒ tā gòng chēng zì jǐ juǎn rù lìng yī chǎng xiōng shā jiù miǎn yú qǐ sù

如果他供称自己卷入另一场凶杀，就免于起诉。

He was offered immunity from prosecution if he would testify about his involvement in the murder of another.