jǐng fāng / fā xiàn / zuì fàn / xiǎng jìn bàn fǎ / miè jì / dàn / hái shì / liú xià / le / xiàn suǒ

警方发现罪犯想尽办法灭迹，但还是留下了线索。

The police found that the criminal went out of his way to cover his tracks, but still left clues.